View Full Version : Power lock help!
07-26-2010, 10:18 AM
I bought my 1990 K1500 back in February. It had a Viper 500 alarm system (w/ remote door lock) installed when I acquired it. I had a parasitic drain on the battery and eventually tracked it to the alarm system. Initially, I ignored it, but eventually killed my Interstate battery. Further inspecting it I found that one of the control boxes to this thing had fried and started to melt the plastic box containing the electronics.
Frustrated, I yanked every bit of it....no regrets there. However in the process my power locks have stopped working. there are two or three relays under the driver side kick panel along with several pairs of wires coming out of the driver side door. Can anyone offer some guidance on getting the power door locks working again?
07-26-2010, 11:35 AM
Although I'm not an alarm expert I do have experience in installing two alarms and doing repair work on another two (different) alarms.
It sounds like the relays were used to reverse the polarity of your power locks. Your vehicle either had positive or negative replays and your alarm only accepts positive or negative door locks so the replay reversed them.
your car has negative door locks, the alarm accepts positive. The relay changed the negative to a positive.
This is how you can get your power locks back
Look at each relay, hoping the person who set them up used RED for constant 12v and BLACK for GROUND
Find a relay that has a LIGHT BLUE wire connected to it. Remove the rely and reconnect the LIGHT BLUE wire to each other
Find a relay that is BLACK/RED (most likely a black wire with a red stripe) Remove that wire from the relay and reconnect to the other end of the BLACK/RED wire
I looked up the colors of your wires at The12Volt.com
the third relay may have been a starter interrupt, this would have been open when the alarm was set so the car couldn't be started
Good luck and remember, take your time and note how all the wires are connected BEFORE you attempt anything, this way you can put it back
07-26-2010, 12:46 PM
That got it!....along with some careful thought and reasoning. Thanks man.
07-26-2010, 02:52 PM
glad you could get it going, mind letting me know what you did exactly?
Powered by vBulletin® Version 4.2.0 Copyright © 2013 vBulletin Solutions, Inc. All rights reserved.
SEO by vBSEO