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relay to make n/c into n/o output trigger


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GlassWolf 
Copper - Posts: 365
Copper spacespace
Joined: June 22, 2002
Location: South Carolina, United States
Posted: July 07, 2002 at 5:01 AM / IP Logged  
Okay here's the deal:
I have a Jeep
I have a car alarm which has both n/o and n/c triggers in it's built-in relay for locking the doors when armed and after putting keys into the ignition.
I have 2 power window roll-up modules with 500mA activation triggers (neg) and accessory leads (to prevent trigger when car is in use)
problem:
door locks and window modules both trigger by way of the normally open, closed @ lock lead on the alarm. (GREEN/ Black wire) However, the window module is causing me nightmares. when it's connected I have the following problems:
-once doors are closed, doors lock and refuse to release their locked state till keys are removed.
windows roll up when doors are closed.. etc etc
attempted solutions:
isolated window module completely by placing an isolating 1n4004 diode on both activation AND accessory leads. no joy, same promlem (how the locks and alarm even SEE the window module at that point is frickin' beyond me.. the diodes should make that damned thing invisible to eveything but the windows)
various other ideas none of which worked.
Okay here's what I want to try. In an attempt to completely isolate the window modules from the door locks so they have NOTHING to do with one another aside from both being tied into the alarm, I propose the following:
using a relay, take the alarm relay's normally-CLOSED-open @ lock output (neg) and convert it into the same as the GREEN/ black output (n/o, closed @ lock) and let the windows use that trigger, and let the door locks use the normal trigger.. thus letting them not see each other even at the alarm.
QUESTION:
how do I wire a relay to switch from a n/c circuit to one that is n/o, then tie in the 500mA activation line from the window modules to that relay so that upon arming the alarm, when it sends it's pulse to the door locks, the n/c wire (violet/black) will trip the relay, reversing it's actual state for the window module so that in the end, both the violet/black and the GREEN/ black wires from the alarm relay will appear to be n/o, closed @ lock.
make sense? good! now how is it done? this is starting to really, REALLY piss me off. haha
thanks :)
-GlassWolf
Pioneer Stage-4, Orion, DynAudio, Fi
Velocity Motors 
Moderator - Posts: 12,488
Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Fabrication. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spaceThis member has been recognized as an authority in Mobile Security and Convenience. Click here for more info.spacespace
Joined: March 08, 2002
Location: Manitoba, Canada
Posted: July 07, 2002 at 11:28 PM / IP Logged  

Sorry, but I have to get some answers to my question ( it's late and I'm not thinking too straight ) but this will help me when I'm more awake:

  • Is the door locks and the window triggers on the same wire coming from the alarm ?
  • If so, why ?? Do you want the windows to go up when armed ? or do you want to manually press a button for them to go down ?
  • If not, then what module are you using for the window roll up ?
  • How about the alarm system that your using ?
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
GlassWolf 
Copper - Posts: 365
Copper spacespace
Joined: June 22, 2002
Location: South Carolina, United States
Posted: July 08, 2002 at 3:26 PM / IP Logged  
Is the door locks and the window triggers on the same wire coming from the alarm ?
yes, and because that is the only negative on armed trigger from the BCM.
If so, why ?? Do you want the windows to go up when armed ?
exactly why. when I arm the alarm i want all 4 windows to roll up. therefore both window modules are tied into the door-lock on arm trigger. both of my aux functions are in use already and I want it to be done on-arm as this was put in primarily for my mom who is forgetful and religiously arms the alarm but forgets and leaves the back windows down sometimes heh
If not, then what module are you using for the window roll up ?
I have two generic window roll-up modules (2 windows each) wired into an ungo MS2004 alarm.
This is in my 94 grand cherokee.
I figured if I can reverse the n/c output of the doorlock relay built into the alarm, it'll give me a second isolated trigger for the window modules so they'll quit causing me nightmares with the door locks.
-GlassWolf
Pioneer Stage-4, Orion, DynAudio, Fi
GlassWolf 
Copper - Posts: 365
Copper spacespace
Joined: June 22, 2002
Location: South Carolina, United States
Posted: July 08, 2002 at 3:32 PM / IP Logged  
this may help:
MS2004 wiring harness/codes:
RED                    Main Power +12V input
BROWN                    Siren +12V output
WHITE                    Parking Light Flash Relay +12V output
YELLOW/BLUE               Auxiliary Function-2 (-) output
BLUE/WHITE               Driver’s Door Lock Priority (-)
BROWN / WHITE               Alarming / Horn Honk (-) 12V output (requires relay)
ORANGE               Sensor Defeat (-) input
BLUE                    Hood / Trunk (-) input
BLACK/ WHITE               Dome Light (-) output (requires relay)
YELLOW/WHITE          Auxiliary Function-1 (-) output
YELLOW               Ignition Key +12V input
BLACK                    Chassis Ground
VIOLET               Door Trigger (+) input
GREEN                    Door Trigger (-) input
BROWN (12 gauge spade terminals)     Starter Kill
BLACK (10A fuse) to BLUE/BLACK     n/o, closed @ unlock
BLACK (10A fuse) to GREEN/ BLACK     n/o, closed @ lock
GREEN/ BLACK to WHITE/ BLACK     n/c, open @ unlock
BLUE/BLACK to VIOLET/BLACK          n/c, open @ lock
currently, both the windows and locks are triggered using the GREEN/ BLACK wire. even using diodes to isolate the window modules from everything so they should have NO output to the alarm, they stikll cause nightmares with the locks, I even tried using a relay to increase output current for activation triggers with no luck.
they flat out will not cooperate with each other.
I need to find a way to essentially create a second trigger line from the alarm to roll up the windows on arm.
-GlassWolf
Pioneer Stage-4, Orion, DynAudio, Fi
omega 
Copper - Posts: 54
Copper spacespace
Joined: July 04, 2002
Location: Canada
Posted: July 08, 2002 at 4:32 PM / IP Logged  

Is there a reason you wouldn't connect the window modules to the starter kill output?  Is it an open when armed starter kill output?

In my experience everyone connects window modules to the starter kill so when the alarm is armed the windows go up.  If the alarm has an open-when-armed starter kill then I guess you can't do this without wiring in relay(s) to change that output to become grounded when armed instead of open. 

In any case, though, wouldn't it be easier to do that than fidilling with the lock and unlock stuff, right?  Or am I missing what you want to accomplish here?

Velocity Motors 
Moderator - Posts: 12,488
Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Fabrication. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spaceThis member has been recognized as an authority in Mobile Security and Convenience. Click here for more info.spacespace
Joined: March 08, 2002
Location: Manitoba, Canada
Posted: July 09, 2002 at 10:25 AM / IP Logged  

My thoughts exactly Omega ....... I usually use the starter disable to operate the window roll up on my installations as well if the unit does not have neough extensions on the module. Another way is to use the ground when armed ( if applicable ) wire to control the window modules.

Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
GlassWolf 
Copper - Posts: 365
Copper spacespace
Joined: June 22, 2002
Location: South Carolina, United States
Posted: July 09, 2002 at 11:23 AM / IP Logged  
first time I've wired these, and they had no documentation at ALL.
when i was doing this for a living, nobody wanted to pay $200+ for the power window option on an alarm ten years ago.
things got a lot cheaper when the internet caught on.. heh
I'll give it a shot.
-GlassWolf
Pioneer Stage-4, Orion, DynAudio, Fi
GlassWolf 
Copper - Posts: 365
Copper spacespace
Joined: June 22, 2002
Location: South Carolina, United States
Posted: July 09, 2002 at 7:34 PM / IP Logged  
No luck there
starter kill circuit (loop on alarm BCM) is normally closed.. in fact trying it on a DMM it's ALWAYS closed.
alarm armed, disarmed, tripped.. always closed.
I connected the window module to the starter kill loop, and the moment the keys hit the accessory position the Jeep (manual trans) tried to jump into the utility room from a standing start.
Discovered that connecting power window module to starter kill causes the car to try starting itself the moment the keys are turned one click forward.
anyway on to any more ideas?
Starter Kill does in fact work, after testing it out (tried to start car with keys when alarm was tripped. no go)
However, when connecting the 500mA activation line of the window modules to this loop, it has rather bad results as noted above.
what am I doing wrong here?
-GlassWolf
Pioneer Stage-4, Orion, DynAudio, Fi
GlassWolf 
Copper - Posts: 365
Copper spacespace
Joined: June 22, 2002
Location: South Carolina, United States
Posted: July 14, 2002 at 10:59 PM / IP Logged  
Jeff, what exactly did ya have in mind by wiring these to the starter kill loop? directly tapping into it? using a relay?
the modules use a 500mA activation trigger
They also have an "accessory" line which I connected to ignition. I'm under the impression this wire is supposed to be connected to an accessory-position +12V when keys are in wire so as not to trigger window modules when car is on?
-GlassWolf
Pioneer Stage-4, Orion, DynAudio, Fi
Velocity Motors 
Moderator - Posts: 12,488
Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Fabrication. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spaceThis member has been recognized as an authority in Mobile Security and Convenience. Click here for more info.spacespace
Joined: March 08, 2002
Location: Manitoba, Canada
Posted: July 15, 2002 at 8:03 AM / IP Logged  

Don't hook up the PINK wire ( ACCESSORY wire ). I never do and they all work without a problem. The starter disable outputs a (-) signal once the system is armed and for as long as the system is armed too, but the window control modules cut input signal once there is a spike in the resistance of the motor wires. The signal coming off the starter disable is a full (-) ground and will support the 500mA required by the modules for an activation wire.

BTW: Why would it be a big deal if your window modules are operational when the car is on or off ? The modules are just duplicating the press of the window buttons wether or not the vehicle is on or off.

Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
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