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best way to reverse polarity on solenoid

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Forum Name: Car Audio
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URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=113304
Printed Date: March 28, 2024 at 8:20 AM


Topic: best way to reverse polarity on solenoid

Posted By: fisherangel7
Subject: best way to reverse polarity on solenoid
Date Posted: April 20, 2009 at 9:13 PM

Best way to Reverse Both + and - on a solenoid?

I have solenoid that is latching type single coil SPDT .  I need to reverse the polarity with one pulse in either direction to cause it to switch from position A to position B and vice versa/  WHat is best way to do it with 12 relays lowest parts count.. thanks.




Replies:

Posted By: haemphyst
Date Posted: April 20, 2009 at 9:19 PM
Wha...? What are you trying to do? I can't make heads or tails of your request...

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."




Posted By: i am an idiot
Date Posted: April 20, 2009 at 9:51 PM
What kind of current does the coil of the solenoid require?  Is it a constant duty coil, or does it just require a pulse to switch states?   You may be able to pull it off with a DPDT toggle switch.




Posted By: fisherangel7
Date Posted: April 20, 2009 at 10:14 PM
The solenoid seems to take about 3 amps @ 12 volts on the coil.    I'm looking for a way to switch the single coil (versus double coil which is much easier but much more bulky to deal with) .  It requires reversing polarity.  Latching means it requires no power to maintain its last position; meaning you save power on the control side.   Both pos and neg have to be reversed to activate it from one position to the other.   its basically a SPDT solenoid but it latches ; which gives me the ability to save the energy required to maintain last position.   It would be nice to have a way to drive it with smaller relay(s) but I am looking for an optimum method to reduce parts and ideally to toggle it from one position to another with just one pulse (or 2 )  etc.  thanks for any help.




Posted By: fisherangel7
Date Posted: April 20, 2009 at 10:21 PM

TO clarify: 

It needs to be non-powered unless the need to change positions is required.  At that time one pulse of perhaps 1/2 sec would be available to change the positon (position A vs Positon B in a single pole double throw (SPDT) latching relay using only one coil.  Thanks for any help on this.   I looked at some of the 12 volt power door lock schematics, but didn't see how they could be applicable since they use same ground instead of reversing both + and -.   The normal forward / reverse method does not seem good since they require constant power to coil to maintain one position. 

In the name of Jesus Christ = Peace (not war) ,amen.





Posted By: i am an idiot
Date Posted: April 20, 2009 at 10:33 PM
posted_image




Posted By: fisherangel7
Date Posted: April 21, 2009 at 7:15 AM

Dear "iamanidiot" ,

Thanks for response but really its pretty vague.. can you show all details. thanks !!  Explain it as well.. thanks!!





Posted By: i am an idiot
Date Posted: April 21, 2009 at 7:31 AM

Purchase a Double Pole Double Throw, momentary toggle or rocker switch.  Look at the back of the switch.  That should clear up a lot of the confusion.

Coil connection 1 and 2 are the connections on the coil of the solenoid.   The red line in the picture is positive 12 volts.   The black line is ground.





Posted By: haemphyst
Date Posted: April 21, 2009 at 9:24 AM
i am an idiot has only shown you the high-current relay terminals, if you were to use a relay. There would be eight terminals on a relay. Those six, already presented, and two more for the solenoid. If you decide to use a simple DPDT switch, then just connect it as he has shown. He also mentions using a momentary switch, but you can use whatever type you desire to acheive the desired result upon activating the switch. Momentary and latched will be your options.

He did NOT show the relay's solenoid terminals, those will simply be two smaller terminals that you connect to your regular on-off switch. The "at rest" position will be the "off" position, and when you flip the swich on, that will reverse the polarity.

One thing that you will not be able to do is turn the outputs of the assembly off. There will always be a connection, and when you turn the car off, that connection will be the "at rest" position - i.e. the control switch in the off position.

What are you using this for? If you cannot have the output always connected, for a DC power type of application, you will have to put an additional relay in front of this one that will turn off the power to the accessory when you turn the car off...

-------------
It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."




Posted By: i am an idiot
Date Posted: April 21, 2009 at 2:01 PM
I think he meant to say i only showed you the low current control for your solenoid.  That is only the DPDT switch. 




Posted By: haemphyst
Date Posted: April 21, 2009 at 2:40 PM
i am an idiot wrote:

I think he meant to say i only showed you the low current control for your solenoid.  That is only the DPDT switch. 

Which are what is connected to the load... The high-current terminals...

Wait... I am TOTALLY lost, now... I know it's not hard to confuse me sometimes, but what are you showing?

-------------
It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."




Posted By: fisherangel7
Date Posted: April 21, 2009 at 3:52 PM

HI "Iamanidiot",  Do you have a "Complete" schematic for this. I am looking for the lowest parts count and hopefully 1 or PULSE activation (from a momentary switch perhaps) .   Again we are locked into a single coil latching solenoid @12 volts on control side.     My understanding of the DPDT (double pole double throw) switchs is that they connect either A and B terminals or they connect C and D ,  (thus you can get two separate circuits (Either AB or CD but not both at same time).    If you tie A and C together  you get a SPDT switch..  By using this as SPDT you can apply + for example to two different places (but only one at a time).   

None of this actually reverses BOTH NEG AND POS polarity (both neg and pos must be reversed to activate the solenoid from one position to the other since it is a single coil type. )

Wonder if what is really needed is a   4P2T switch with an at rest position so that when control power is dropped it doesn't go back to the other position? (or use 2 DPDT's ganged together, higher parts count again). 

Guess we were hoping that someone had already figured a way to get it to one pulse with some neat gimmick method with low parts counts..  one guy mentioned using diodes to reverse the polarity?  any info?





Posted By: KPierson
Date Posted: April 21, 2009 at 6:22 PM

I took the liberty of completing the drawing - I am an idiot I hope you don't mind me adding to your initial drawing;

posted_image



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Kevin Pierson




Posted By: KPierson
Date Posted: April 21, 2009 at 6:23 PM
I appologize for my mistake, I really should have added a fuse in there somewhere (as close to the battery as possible).

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Kevin Pierson




Posted By: i am an idiot
Date Posted: April 21, 2009 at 6:45 PM
A very small fuse at that.  5 amps should be fine.    Thanks for finishing the drawing.  I hate details.  Maybe I will draw the high current section of the solenoid tonight.  That may take a larger fuse.




Posted By: i am an idiot
Date Posted: April 21, 2009 at 6:54 PM
Did you purchase the switch yet?   It will clear up a lot, when you get the switch.   I am fully aware of how your solenoid operates.  The above switch and wiring WILL reverse the polarity to connect the common pole of the relay to the NC pole or the NO connection.  If of course the contacts are labeled NO and NC.  Since it is a latching relay, they may not be labeled that way.




Posted By: fisherangel7
Date Posted: April 21, 2009 at 7:34 PM

Thanks.. I am getting the idea..  THANKS!   Let me add an additional twist to the equation for more fun !!

Ideally we would like to use our microcontroller to use only ONE port to send one pulse the  large single coil latching solenoid XX (100amp72volt) to make it go from position A to position B.      Of course this is very hard to do with existing microcontrollers.  So we then fall back to using intermediate relays.. BUT we would like to have no power whatsoever on anything once the big XX solenoid latches up (either A or B position).   Do you have a way to eliminate all power on control side .. 

It looks like with the DPDT system you named, it would still be feeding current to the big XX solenoid which because it is a latching big solenoid doesn't need control power any more. 
  Any advice is gratefully appreciated.  THanks.  





Posted By: fisherangel7
Date Posted: April 21, 2009 at 7:50 PM

In other words a DPDT relay with a center "rest" position would be nice .. so that no control power flow  except when pulsed from microcontroller (MCU)  (its a 5 volt pulse which we can very easily with a mosfet boost up in voltage and amps from micrrocontroller). 

Failing a one pulse system ( using no control power except when pulse come thru), a 2 wire system would be next best (uses 2 ports (wires)  from MCU but probably only 1 would pulse at any one time).  





Posted By: fisherangel7
Date Posted: April 21, 2009 at 8:07 PM

Just so we all know.. the insde the relay schematic for a single coil DPDT relay is below.   1 and 8 are the control power .   3 and 6 are the +  and - for the main battery supply respectively .   Connect 2 motor leads to 2 and 7 ;  and  connect with external wires terminal 2 to 5  and also  connect 4 to 7;  that gives polarity reversing when relay is actuated.  

  The at rest position is shown;  so motor terminal 2 is + and motor Terminal at 7  is  - .    

When the power at 1,8 is reversed. the contacts are then 3 to 4 which is also connect to 7 making the motor lead opposite of what it was (now it becomes +),  same for other side  6 connects to 5 which is also connected to 2 (making it -) which is opposite polarity of previous.

Thanks to Iamanidiot's comments. 

posted_image





Posted By: i am an idiot
Date Posted: April 21, 2009 at 8:23 PM

A momentary switch just applies voltage momentarily.  This means when you release the switch, it goes to the off position.   This new twist you bring into the equation would have really been helpful in the initial post.  Since you are not intending on using a manually operated switch, I have wasted tons of tme trying to help you understand something that is totally useless.

Yes I do know how to eliminate all power drain on the control side.  There is none.





Posted By: fisherangel7
Date Posted: April 21, 2009 at 8:28 PM

Well not really wasted.. I am grateful for what you posted.  It was very helpful.  I have at least on solution now thanks to you!   
   I was only trying to optimize the solution you gave us.   The ideal is to use no power whatsoever in the control side except when actually activating the latching XX solenoid. 

I even thought about using a flip flop IC to flip the polarity but then again even they use power of a sort although it might be alot less than other methods.  I think an IC chip uses at least 3 ma @ 5 volts  even when sitting there doing nothing.   

THANKS again.  
 IF you come across solution for the ideal please let us know. 

Learning is never wasted anyway and I and others have learned.





Posted By: i am an idiot
Date Posted: April 21, 2009 at 8:33 PM
There is NO POWER draw on the control circuit.  Only draw is when the coil is being switched.  How ever many milliseconds of output there is to latch or unlatch, that is the only time that there is any current draw.




Posted By: fisherangel7
Date Posted: April 21, 2009 at 8:38 PM

Ok,  I am not understaning again. 

IF the small 12v dpdt relay is at rest or latched position it is still providing power to the coil on the xx solenoid ?  If the small 12v dpdt relay is not at rest or in other latched position it is also still providing power to the coil on the xx solenoid?    That is wasted power.. so ideally we would like to eliminate the constant control power on problem. 

A small DPDT with a 3rd no contact position would be nice.





Posted By: haemphyst
Date Posted: April 21, 2009 at 8:41 PM
I still don't understand WHY he wants to "reverse the polarity on a solenoid". A DC coil will be actuated the SAME WAY - and that is on whatever way you connect the DC voltage. Unless there is a diode present, preventing the flow of current in one direction, reversing the polarity is pointless!

-------------
It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."




Posted By: fisherangel7
Date Posted: April 21, 2009 at 8:44 PM

haemphyst :   Its a "latching spdt Big amps single coil relay (xx)    It has to be powered one way or the other as need by reversing the polarity.





Posted By: i am an idiot
Date Posted: April 21, 2009 at 8:47 PM

He has a latching solenoid, when the coil is powered it clicks and locks in position A.  The only way to get it to position B is to reverse the voltage on the coil.  This clicks it and locks it in position B. 

I have not said anything about a relay other than the solenoid.  You asked for low part count, I said you should be able to do this with a switch.  All I have been talking about was a switch.  Then came the Paul Harvey line.  Now for the rest of the story.





Posted By: i am an idiot
Date Posted: April 21, 2009 at 10:11 PM
Does your microcontroller have 2 outputs, one for Latch A and another output for Latch B? If so what kind of current capacity does it have? Are there any more twists you wish to add for fun? Will it drive a 5Volt relay directly?




Posted By: fisherangel7
Date Posted: April 22, 2009 at 10:54 AM

Thanks for your efforts.. you did not waste your time.. everyone learned from you.. so cudo's to YOU !! !!   YOU DID GREAT ! THANK YOU < THANK YOU < THANK YOU !

it can drive 5 v directly but also it has a current limit.. we like to use one or 2 ports maximum because there are limited ports and we don't want to get into reassigning ports on the fly.  thanks.

FYI:  That would be a great product that is needed..  a one pulse using no control power anywhere in the system once latched.  Please let me know if you have any brainstorms.. mosfets are good for no power used when sitting idle..

In the name of Jesus Christ = Peace (not war) !





Posted By: i am an idiot
Date Posted: April 22, 2009 at 11:03 AM
If your controller will trigger a 5V relay with I think .090 amps of current.  This will be simple with 2 relays.  But you will have to use 2 ports  one to latch to A and another to latch to B. 




Posted By: KPierson
Date Posted: April 22, 2009 at 11:27 AM

Your requirements are a bit vague, so it's hard to offer a complete solution.

If you want to use only one pin you will need to set the pin up as a normally high impedence input pin, then when you want to output a pulse you can output either a 0vdc ground pulse for one way (say off) and a 5vdc pulse for the other way (say on).

That will give you the logic needed to perform both functions from one pin.  What you do next will be up to the system designer.  You can run 3 transistors per function (3 on, 3 off - 6 total) to provide low current reverse polarity functionality or you could run 2 transistors and drive SPDT relays to provide your reverse polarity.

To do the transistor set up for the "ON" portion you will need 2 NPN transistors - the first one will provide your (-) output and the second one will bias the 3rd transistor - a PNP.  The PNP can provide your + output (either 5vdc or system voltage depending on application).  The "OFF" portion will need 2 PNP transistors - the first one will provide your (+) output and the second one will bias the 3rd transitor - a NPN.  The NPN will provide your - output.

You can then connect all the 4 outputs of the transistors to your solenoid.  You, of course, will need to size the transistors accordingly.  When the output pin of the uc is set to high impedence the circuit will take 0 current.  It will also be fairly stable because there will be no possible way both sets of transistors can be on at the same time (since they are triggered by the same pin).

The downside to using transistors is the part count will be kinda high as you will need multiple resistors and diodes to protect everything.  If you go with the two SPDT relay idea you'll still need a few resistors and diodes.  Unfortunately the more complex you make things the more parts you are going to need.

To do the two SPDT relay setup, like I said you will need two transitors - a PNP and an NPN.  The PNP will provide the (+) voltage for one relay (the other side of the coil will constantly be grounded) and the NPN will provide the (-) for the second relay (the other side of that coil will constantly be tied to voltage).  The common pins of the relays will be connected to your solenoid, the NC pins will be connected to ground, and the NO of both relays will be connected to voltage.  With this setup, whenever ONE relay is fired (and only one will fire at a time) the ground will be removed from that leg and replaced with voltage, thus creating a reverse polarity output from only one uC output pin.



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Kevin Pierson




Posted By: KPierson
Date Posted: April 22, 2009 at 11:30 AM

i am an idiot wrote:

If your controller will trigger a 5V relay with I think .090 amps of current.  This will be simple with 2 relays.  But you will have to use 2 ports  one to latch to A and another to latch to B. 

I, personally, wouldn't drive anything over 0.020A directly off of a uC pin.  You would also need diodes across the coil of the relays.  About the only thing I would ever consider running directly is either a reed relay or an LED, anything else, generally, needs an amplifier.



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Kevin Pierson




Posted By: fisherangel7
Date Posted: April 22, 2009 at 6:11 PM

Hey KPierson,  neat idea.  Can you provide a schematic.. that might solve alot of problems with limited ports available.  I think mosfets use actually very nearly 0 current when just sitting there.   The idea is to not use any power anywhere in the whole circuit after xx latching solenoid is latched up.    Using intermediate relays means that they remain in some position that is passing power to the xx solenoid even though their own control power may be off.     I would say that an all mosfet transistor setup would be least power using in the idle state.

THANKS if you can provide complete detailed schematic.. thanks

In Name of Jesus Christ = Peace (not war) Amen.

The MUC pins are rated for 20ma but Total is higher for all pins (but not 20 ma each all at same time.. ie if you have 20 pins.. its not 400ma total.. probably more like 70ma total so of course we want the pulse type system.





Posted By: i am an idiot
Date Posted: April 22, 2009 at 8:09 PM
Does this controller output ground or 5volts?   I think I can make it happen with 2 transistors 2 diodes 2 SCRs 2 half wave rectifiers, 6 capacitors, and I can even throw in a requested FET.    It isn't going to take all of the above parts, only the transistors diodes and relays. Do you have a datasheet on your controller, I can integrate the controller into my diagram.    And you also never answered the question about any more twists.




Posted By: KPierson
Date Posted: April 22, 2009 at 9:27 PM

I think the issue here is you really have no idea what you want, or what you need, and therefore don't understand any of the options given to you.

The relays in my suggestion would just be pulsed on and off.  They wouldn't stay latched.  They are ONLY there to reverse the polarity.  The solenoid latches on its own, based on the information you gave us.

I don't see a need to draw up a schematic, maybe someone else will.  It's a VERY basic circuit and you should be able to find them on the internet (do a google search for 'transistorised relay driver'.  You'll need one NPN circuit and one PNP circuit all driven off the same output pin.

I, personally, would go with the multiple transistors and just size the output transistors appropriately for the solenoid you are using.  You may even be able to find an H bridge chip that is compatible with your uC and lower your parts count.

What exactly is this project for?  Typically, when people start messing around with microcontrollers they have at least a basic electronic knowledge and a circuit like this wouldn't be an issue.  Is this like a school project or something?



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Kevin Pierson




Posted By: fisherangel7
Date Posted: April 22, 2009 at 9:35 PM

Ok.. then since you are so clever, how then do you have a relay providing a reversing polarity to the big xx solenoid and that same relay completely unpowered on either control side or power thru contacts side when pulse is not coming thru.  We know it could probably be worked out with mosfets.. but we were hoping some good guru  had already perfected.  I guess we were looking for someone who does it for a living and is up on the subject and could just zap out a schematic.  Obviously its beyond your abilities  or   Probably you don't know???

Also just because someone asks the time of day doesn't they can't tell time.  If you are going to arrogant, please do it on your own time. thanks.

Leggo your ego !

In the Name of Jesus Christ = Peace (not war). amen!





Posted By: fisherangel7
Date Posted: April 22, 2009 at 9:43 PM
if anyone can post a complete schematic of a one pulse system to reverse polarity to latch a 100 amp 72 volt latching solenoid "without" using any control power or any other power except when activating the pulse, please post.. All sincere entries appreciated. thanks!




Posted By: KPierson
Date Posted: April 22, 2009 at 10:07 PM
fisherangel7 wrote:

Also just because someone asks the time of day doesn't they can't tell time.  If you are going to arrogant, please do it on your own time. thanks.


I appologize if you think I'm being arrogent, I just don't understand how you're going to program a microcontroller, download the program, power it, and run your solenoid if you can't figure this simple circuit out.  I posted a fairly detailed description of how it works, yet it wasn't enough for you to figure out.  I appologize that I am unwilling to spend 30 minutes drawing up a diagram that you should be able to figure out from my description.  To me, it seems like you have a group project for school or something and this is your "part" of the assignment.  I could be wrong, but thats what it seems like.

fisherangel7 wrote:

Ok.. then since you are so clever, how then do you have a relay providing a reversing polarity to the big xx solenoid and that same relay completely unpowered on either control side or power thru contacts side when pulse is not coming thru.  We know it could probably be worked out with mosfets.. but we were hoping some good guru  had already perfected.  I guess we were looking for someone who does it for a living and is up on the subject and could just zap out a schematic.  Obviously its beyond your abilities  or   Probably you don't know???

OK, I'm not sure how else to explain this so you understand.  You already posted:

fisherangel7 wrote:

Best way to Reverse Both + and - on a solenoid?

I have solenoid that is latching type single coil SPDT .  I need to reverse the polarity with one pulse in either direction to cause it to switch from position A to position B and vice versa/  WHat is best way to do it with 12 relays lowest parts count.. thanks.


So, I'm assuming all you need is the ability to provide REVERSE POLARITY pulses to the solenoid in question.  You went a step further to add that you want it done off of one output pin (not port like you keep calling it, a port is a group of pins).  This can EASILY be done with two SPDT relays in a typical "five wire" configuration.  The NC pins of BOTH relays rest at ground and the NO pins are connected to 12vdc.  So, normally, the solenoid has a ground on BOTH wires (and therefore no current flows).  When you fire ONE relay it removes a ground from the solenod and replaces it with voltage.  This creates a REVERSE POLARITY PULSE to pulse the solenoid you mentioned above.  When you return your output pin to a high impedence state the relay will shut off, and NO CURRENT will flow through any parts.  The solenoid will stay latched because YOU said it was a latching solenoid. 

Mosfets will work, but are overkill and are very sensitive.  They should only be used when you need a very low on resistance (to minimize heat) or if you need high speeds - you need neither here.  I would go with NPN and PNP transistors that are pretty much bullet proof for your application.

Do you have any idea how much current your solenoid is going to require to pull in?  The amount of current needed to energize the solenoid will ultimately determine the "best" way to do what you are trying to do.



-------------
Kevin Pierson




Posted By: fisherangel7
Date Posted: April 22, 2009 at 10:20 PM

Ok kevin,

I am very tied up with doing software so any drawn schematic would be nice just to clarify it for our reference.   Can you scratch out a complete schematic.  I have one pin available (out of 35 ) to do this with, it can provide 20 ma @ ~ 5v.   I think your idea makes sense but would again be nice to see it all drawn out completely.   Just use Paint program and don't worry if its pretty (ugly is great as long as remotely readable and completely understandable).   Yeah we could probably work it out.. but you already know it all as its your idea.   I must say I am intriqued to be able to have 0 power used except when changin the position of the final xx solenoid .  so ,  Thanks.

It takes 10 to dance the binary!   





Posted By: KPierson
Date Posted: April 22, 2009 at 10:38 PM

Again, google is your friend.

posted_image

(taken from a site I found on Google).

Connect your output pin to the "control" dot.  R2 is optional in both diagrams and as long as you use quality components you shouldn't need either one of them.

Next, use this diagram from this site:

posted_image

You'll have to modify it slightly:

Left relay:

Pin 86 - connect where the relay goes on the left diagram above (positive logic diagram).

Everything else is as shown

Right relay:

Pin 86 - connect directly to ground
Pin 85 - connect where the relay goes on the right diagram above (negative logic diagram).

Pin 30 on both relays will connect to one side each of the solenoid.



-------------
Kevin Pierson




Posted By: i am an idiot
Date Posted: April 22, 2009 at 11:44 PM
That is exactly how I was going to wire the relays. But I was going to use 5 volt relays and have a transistor as current gain amplifier. But I am afraid that after I draw it up there will be another twist.




Posted By: fisherangel7
Date Posted: April 23, 2009 at 12:04 AM

posted_image

Since you say in left relay :

"Everything else is as shown  "   seems to say leave 85 leftRelay connected  to both 87 pins, and also to 86 rightRelay , but later you say connect the 86RRelay "directly  to ground".    Also presuming you mean to leave both 87a's to ground as well.   Ok.. maybe I'm wrong but it looks like the NC pins are 30 to 87a in both relays.. both to ground it looks like. 

   But if thats true: then when either relay actuates (because you said connect 86R "directly to ground"  its just the same thing. you are connecting from ground to ground and the other terminal 30 is still also connected to ground. 

   I would presume this was a mistake on your part? : You probably meant to say leave 86R-85L to ground and 87R -87L both  connected to 12 + as it was originally shown

This type of thing is why we request the "time of day" (schematic) < THANKS FOR EVERYONES HELP!  I think this may be the solution (THE RIGHT Schematic ) 

 THANKS AGAIN !!





Posted By: fisherangel7
Date Posted: April 23, 2009 at 12:14 AM

GOD BLESS ALL OF YOU AND MAY THE GOOD SPIRIT KEEP YOU IN GOOD SPIRIT AND GOOD "SPIRITS" AS WELL !  

The thing about dancing with the devil is that there is always a new twist and he can keep speeding up the pace as well until ...  !  But of course that is the idea behind the mother of invention!

ID:  YOU  helped us  find one solution.. THANKS !

KEVIN:  The twist was a different problem: and YOU gave us that one as well.  THANKS !  
  WIN - WIN !

Now when we have tons of juice we can do one.. when we have little juice we can do the other.  Win-Win.

Don't worry about riches;  those who are first will be last and those who are last will be first in the kingdom to come !





Posted By: KPierson
Date Posted: April 23, 2009 at 6:07 AM

Neither of the diagrams you posted will work.  I did not make any mistakes, all my changes were correct.  When I said to connect pin 86 on the right relay to ground , I meant ONLY that pin, otherwise I would have told you to change the other pins as well.

Connect pin 86 on the right relay to ground.  Disconnect it from the other pins that it is currently connected to and don't change any of the other pins.

You still haven't told us what this is for - we've offered quite a bit of help and you've given us nothing. 



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Kevin Pierson




Posted By: fisherangel7
Date Posted: April 27, 2009 at 9:11 PM

Its for a special project. 

But you in your wisdom did not specifically say to disconnect pin from anything.. that brought on the confusion.  

Cheer up  you just helped the alternative energy efforts !!

Blessed are the feet of those who bring the message of peace !





Posted By: kenwood_nut
Date Posted: May 04, 2009 at 10:09 PM

I got lost on this one too.  I'm getting ready to hook my rear Optima up with a Continuous-Duty Solenoid.  My starter/alternator expert friend who has rebuilt them since he was in diapers told me this was what I needed to use rather than a battery isolator.  He explained it all, and it all made sense.  He said when I went looking for one, just tell them if they ask for the application that it is for a Warn Winch.  I did find one online.  Then my buddy drew me a little diagram of how easy it is to hook up.  Piece of cake. 

But this original post and subsequent ones lost me a long time ago.  Never did really figure out what it is that this solenoid was supposed to do.

Anyway, I hope the OP has good luck and finds his answers.






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