GM-U7 wiring help

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=41649
Printed Date: May 09, 2025 at 11:43 PM

Topic: GM-U7 wiring help

Posted By: naamanf
Subject: GM-U7 wiring help
Date Posted: October 25, 2004 at 8:23 PM

I am using the GM-U7 on a 2003 Yukon. It has a green ground output that is to the alarm door trigger. It has a +input from the dome light. Now what functions do these server? The only thing I can think about the door trigger is that it gets a signal over the databus when a door is open and it just makes the install easier (it least thats what I hope it does) The dome light I have no clue. Any ideas?

Replies:

Posted By: misterjimbo
Date Posted: October 25, 2004 at 8:59 PM

not familiar with a gm u7, but all the modules i use have a + input that you hook up to the dome light and a negative output that goes to the alarm. I think that answers your question, if not pm me and i will try to help you out

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Posted By: naamanf
Date Posted: October 25, 2004 at 9:09 PM

Thats what it seems it does. Just can't figure out what purpose it serves.

Posted By: extreme1
Date Posted: October 25, 2004 at 9:57 PM

when you remote start and shut down these trucks the interior light comes on, this circuit prevents the alarm from triggering when you remote start and when the remote start shuts down

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Shaughn Murley
Install Manager, Dealer Services
Visions Electronics
Red Deer, Alberta

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