Print Page | Close Window

domelight on 1991 VW GTI & Viper 850xv

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=25614
Printed Date: July 16, 2025 at 3:38 PM

Topic: domelight on 1991 VW GTI & Viper 850xv

Posted By: Twentyvee
Subject: domelight on 1991 VW GTI & Viper 850xv
Date Posted: January 31, 2004 at 8:05 AM

I'm installing a Viper 850xv in my 1991 VW GTI. It uses negative door switches. My question is this, do I splice into the same wire for the domelight supervision as I do for the alarm input from the doors? If so does it need to be diode isolated at all? My concern is if the alarm sends a ground signal to the domelight to turn it on after being disarmed will it do any kind of backfeeding to the switches when I open the doors, or is that not a concern because it is a ground signal? Or does the alarm automatically shut down the domelight supervision as soon as the door switch is triggered and the domelight then gets its signal from the switch. Thanks

Replies:

Posted By: rudbwoy69camaro
Date Posted: January 31, 2004 at 9:15 AM

Tie it right into the door trigger. You'll be fine.

-------------

Posted By: Twentyvee
Date Posted: January 31, 2004 at 9:27 AM

So tie both the domelight supervision and the door trigger input to the same wire? Any diodes or relays required?

Print Page | Close Window