2003 Chevy Trail Blazer door trigger
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=24729
Printed Date: August 06, 2025 at 8:18 AM
Topic: 2003 Chevy Trail Blazer door trigger
Posted By: Robman75
Subject: 2003 Chevy Trail Blazer door trigger
Date Posted: January 16, 2004 at 10:16 PM
Can some one point me in the right direction? I'm looking for the door trigger circuit on a 2003 Chevy Trail Blazer LS. This vehicle has no conventional pin switches, it utilizes the door's closing latch. My wiring diagram said that it was a black wire (-) at the pass door pin. (This truck has no pins).
Replies:
Posted By: geepherder
Date Posted: January 17, 2004 at 12:14 AM
I haven't done it, but I'd imagine you can find it behind the driver's side kick panel where the door wiring comes in.
Posted By: tblanning
Date Posted: January 19, 2004 at 3:30 PM
try this; Alarm Input Wire: | | GRAY/BLACK (+) | UNDERNEATH DASH AT COURTESY LAMP |
Posted By: daniel2002p
Date Posted: January 19, 2004 at 7:54 PM
it is going to be a brown wire located in the drivers door pillar.
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Posted By: sparkie
Date Posted: January 19, 2004 at 8:11 PM
You will need to run a wire into each front door to obtain your correct circuit. The wire you need to attach it to is a gray/black in the driver's door at the module; a BLACK/ white in the passenger front door. For the back doors look for a a light blue/black coming out of the driver's rear door and a light GREEN/ black coming out of the passenger's rear door. You must diode isolate these wires and use their summed output to go to your alarm. The wires are all negative. To diode isolate the wires, install a one amp diode on each wire with the white band facing towards each door. Splice all 4 of the other ends of the diodes together to create your summed doorpin circuit. You can' use the wire at the interior light as most vehicles now don't activate their interior lights if the car senses there is enough ambient light during the day.
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sparky
Posted By: raydawg357
Date Posted: January 20, 2004 at 1:42 PM
You can save yourself some time and purchase the module from DEI. It runs around $30 and and you only have to connect one wire and it will activate your door trigger, door locks, flashing lights and horn.
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Do it right the first time
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