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Heated seat kit and relay wiring

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=74769
Printed Date: May 29, 2024 at 6:22 AM


Topic: Heated seat kit and relay wiring

Posted By: repmud
Subject: Heated seat kit and relay wiring
Date Posted: March 19, 2006 at 7:30 PM

I would like to verify the wiring before I go do it.  I want to make the the heating element only work when I turn the key.  I was planning on using a relay that I would wire like this, if I read correctly.

30 and 86 constant 12 volt with 30 having a fuze

87 to the power feed for the heat element kit

85 to the cigarette lighter power wire (it is only hot when key is turned)

87a empty

Will this work and is it correct?




Replies:

Posted By: mo12v
Date Posted: March 19, 2006 at 8:39 PM
repmud wrote:

I would like to verify the wiring before I go do it.  I want to make the the heating element only work when I turn the key.  I was planning on using a relay that I would wire like this, if I read correctly.

30 and 86 constant 12 volt with 30 having a fuze

87 to the power feed for the heat element kit

85 to the cigarette lighter power wire (it is only hot when key is turned)

87a empty

Will this work and is it correct?


PIN 85 needs a GROUND or Negative to trigger Relay.............



-------------
MO

Don't Learn from Others Mistakes
You Might Be the One That Knows.




Posted By: repmud
Date Posted: March 20, 2006 at 6:28 AM
mo12v] wrote:

QUOTE=repmud]I would like to verify the wiring before I go do it.  I want to make the the heating element only work when I turn the key.  I was planning on using a relay that I would wire like this, if I read correctly.

30 and 86 constant 12 volt with 30 having a fuze

87 to the power feed for the heat element kit

85 to the cigarette lighter power wire (it is only hot when key is turned)

87a empty

Will this work and is it correct?


PIN 85 needs a GROUND or Negative to trigger Relay.............

[/QUOTE]

Ok, I'm a bit confused.  If I ground pin 85 how do I get the "turn key" to flip the relay?  I was planning on using the cigarette lighter circuit to do that since it only works when I turn the key.  I do not want the seat circuit to be hot when the car is off. 





Posted By: cntrylvr79
Date Posted: March 20, 2006 at 10:03 AM
mo12v] wrote:

QUOTE=repmud]I would like to verify the wiring before I go do it.  I want to make the the heating element only work when I turn the key.  I was planning on using a relay that I would wire like this, if I read correctly.

30 and 86 constant 12 volt with 30 having a fuze

87 to the power feed for the heat element kit

85 to the cigarette lighter power wire (it is only hot when key is turned)

87a empty

Will this work and is it correct?


Actually you'll need to ground 86.  This way the relay wil power up when you turn the car on.

PIN 85 needs a GROUND or Negative to trigger Relay.............

[/QUOTE]

-------------
Cause I'm So white and nerdy...
First Class Certi-fried installer




Posted By: KarTuneMan
Date Posted: March 20, 2006 at 10:30 AM

HELLO....if you ground both 85 and 86 your relay will do nothing.

If you still want to use the switch that comes with the kit, use Ign. 12v. to power the relay, pin 85 or 86 and I hope the switch is a negative trigger. pin 85 or 86.

Most of these hot seats have PRE-WIRRED relays connected to their switches....Im having a tough time understanding why you need to re-wire it.



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Posted By: repmud
Date Posted: March 20, 2006 at 1:16 PM
KarTuneMan wrote:

HELLO....if you ground both 85 and 86 your relay will do nothing.

If you still want to use the switch that comes with the kit, use Ign. 12v. to power the relay, pin 85 or 86 and I hope the switch is a negative trigger. pin 85 or 86.

Most of these hot seats have PRE-WIRRED relays connected to their switches....Im having a tough time understanding why you need to re-wire it.


I'm not re-wiring, I'm adding a heated seat/leather kit to my car.  I have everything installed I just have to run wires and mount the switch.  I basically did not want to tap the cigarette lighter wire for power for both heating elements, I want to use it to switch the relay.  I wanted to run the heaters on their own circuit, but I only want them to be operational when the key is turned on so I can avoid killing the battery or starting a fire.  The kit I have does not seem to have the relay, all I have is the wires and a switch (x2, passengers seat/drivers seat).  If I didn't clear anything up please let me know, I want to try and wie this thing tonight so I can enjoy the heat for a month before it gets hot.





Posted By: Twelvoltz
Date Posted: March 20, 2006 at 2:04 PM
Pin 85 to ground
Pin 86 to "cigarette lighter Positive" (Switched hot)
Pin 30 to fused constant +12V
Pin 87 to +12V input of heater package (probably to feed switch)

Is this what you are asking? This would supply power via the relay only when there is +12V at the cigarette lighter.




Posted By: repmud
Date Posted: March 20, 2006 at 9:05 PM

Twelvoltz wrote:

Pin 85 to ground
Pin 86 to "cigarette lighter Positive" (Switched hot)
Pin 30 to fused constant +12V
Pin 87 to +12V input of heater package (probably to feed switch)

Is this what you are asking? This would supply power via the relay only when there is +12V at the cigarette lighter.

Yes.  I see how it works now too, thank you.





Posted By: doibuy
Date Posted: March 20, 2006 at 9:11 PM
You don't need a relay for the seat heaters, that is what the switch is for.  Ground the black wire from the heaters, and connect the red wire to Ignition power.  Then the on/off switch that comes with the kit will control when they are on/off, but only when the Ignition is turned on.




Posted By: dlek
Date Posted: March 21, 2006 at 9:16 AM

both of the previous two posts have accurate solutions that seem to work with your system. it is up two you whether you want the heaters tp recieve power for the ignition circuit or the constant power circuit(with ignition circuit as the switch.

let us know how you wire it





Posted By: repmud
Date Posted: March 21, 2006 at 11:57 AM

I'm going to wire it with a relay using the cigarette lighter as the switch to power up everything.  I am still going to use the switch that came with the heated seat kit, except now it will only work with the key turned on.  I realze I can use the ignition wire for power and achieve the same thing, but I do not like hacking into this wire, I'm going to save the hacking for when I install the remote start/alarm. 

Thanks for all the replies.






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