Door Lock Trigger problem 98 Tahoe.

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=85522
Printed Date: May 16, 2025 at 4:10 AM

Topic: Door Lock Trigger problem 98 Tahoe.

Posted By: pbaken
Subject: Door Lock Trigger problem 98 Tahoe.
Date Posted: November 12, 2006 at 12:38 PM

I' m installing a security system on a 98 tahoe w/a keylees entry. My problem is that when I connect the lock/unlock wires to the head unit my door trigger locks will not function but the remote work just fine. I hear a clicking but no movement. At one point I had everything working but blew a fuse on the C wire from the unit once i used the door triger locks. I've tried every combination to no avail. this is how it is cuurently connected:

C(Fused)- Lock wire...... *do I need to add a resistor?

NC- Constant 12v

NO- Ground

C1- Unlock

NC1- Constant 12 v

NO1- Ground

Also Do I need to do anything with the factory disarm (tan wire)

Thanks- Paul

Replies:

Posted By: KarTuneMan
Date Posted: November 12, 2006 at 6:22 PM

Based on your description of the lock wires, the unit has built in relays. The wires that have the fuses on them go to 12v. These represent pin 87 on a standard relay. Now what you need is the wires that represent pin 30. (common) One will go too the lock wire, the other to the unlock wire. Use your meter to dtermin which is which.

LOCK	Lt.blue	In driver's kickpanel	+
UNLOCK	White	In driver's kickpanel	+

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Posted By: pbaken
Date Posted: November 15, 2006 at 6:58 PM

Thanks! I have it working... not sure if its right though. I just disconnected the No, No1 (ground) wires and it works???The fused wire(C) is connected to Lt. blue wire.