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power door lock wiring

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Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=130674
Printed Date: May 09, 2024 at 3:03 PM


Topic: power door lock wiring

Posted By: garrinchilders
Subject: power door lock wiring
Date Posted: February 19, 2012 at 11:48 PM

Hey guys this is my first post and I hoping that someone can offer me some sound assistance. I have 2001 Chevrolet S-10base model pickup. I am installing factory power windows and locks from a 1999 Chevrolet Blazer (practically same truck inside and out). I have the windows all figured out and working from the factory switches for the blazer. The door locks on the other hand are a different story... The donor blazer had a factory security system and keyless entry that my truck doesn't have, so the Pinout for the BCM (body control module) doesn't contain the wires necessary to hook everything up just like it was in the blazer. The doors that I got had the wires cut in the door jam so I don't have the factory relay blocks either. I have gone through every diagram in the door lock section trying to get them to work with no success.

   There are two wires coming from the actuators along with two other plugs for the factory alarm system. I can ground one of the wires and power the other It locks, if I ground the other and power the other it will unlock. So I gather that the actuator rests both legs in the open position.

    The switch has several wires:
One is constant ground
One is constant 12 volt
One is 12 volt while pressing lock (open at rest)
One is 12 volt while pressing unlock (open at rest)
One is for illumination.

I have several relays, I have tried to wire the relays like the 3 wire diagram, the 4 wire diagram, and the 5 wire diagram, and even the reversed polarity actuator diagram.... No luck. I have a power probe 2, a fluke multimeter, and all the necessary wiring and crimping and soldering tools and still can't seem to figure this out. Can someone please walk me through this?



Replies:

Posted By: 91stt
Date Posted: February 20, 2012 at 12:52 AM
You're going to have to use the reverse polarity actuator diagram as your starting point but make a few changes. The terminals connected to the negative alarm lock and unlock outputs shown in the diagram should be connected to the respective switch wires that change to 12v. The other side of the relay coil needs to be connected to ground instead of 12V as shown. Keep the 12V connected to both 87 terminals. Everything else should remain the same.

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This information is provided only as a reference.
All circuits should be verified with a digital multi-meter prior to making any connections.




Posted By: garrinchilders
Date Posted: February 20, 2012 at 11:16 PM
Thank you! That worked flawlessly! I spent 4 hours trying to figure that out... You're an electronic genius!





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