791XV GMC Sierra Unlock and domelight

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=52780
Printed Date: November 04, 2025 at 8:06 AM

Topic: 791XV GMC Sierra Unlock and domelight

Posted By: greenbuck50
Subject: 791XV GMC Sierra Unlock and domelight
Date Posted: March 29, 2005 at 1:08 AM

Hello,

I tried the search option and looked through many threads but could not find the answer that I needed. Forgive me if I missed it and thanks in advance for your help. I have a 2002 GMC Sierra with a DEI Viper 791XV alarm/remote start, and whenever I unlock with the remote, the dome lights do not come on. I was wondering how I could make them come on when I pressed the unlock button. Thanks a lot and have a good one.

Replies:

Posted By: Velocity Motors
Date Posted: March 29, 2005 at 1:33 AM

Use this diagram ( negative trigger ) and wire the BLACK/ WHITE wire to pin 85.

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

Posted By: dare_ds69
Date Posted: March 29, 2005 at 7:22 AM

there is a push botton at the light switch with controls the dome light

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how own your mind, control your life.
MECP certified. always use a DMM

Posted By: greenbuck50
Date Posted: April 05, 2005 at 1:17 AM

Thanks guys... I just finished about a half hour ago hooking up the relay with all of the wires, and now my dome light comes on when I unlock/disarm the Viper 791XV. :) I am going to make a donation of a few bucks to 12volt.com since you guys were such great help, especially with the wiring diagram. Thanks a lot!

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