Viper Alarm LED Activation Question
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=38657
Printed Date: July 22, 2025 at 3:03 AM
Topic: Viper Alarm LED Activation Question
Posted By: jmr964
Subject: Viper Alarm LED Activation Question
Date Posted: September 05, 2004 at 10:06 PM
Wondering if someone can tell me if on a Viper (791XV in particular) brain if it sends steady power and pulsating ground to the LED to activate it or if it sends pulsating power and steady ground to light it?
Replies:
Posted By: tbirdman74
Date Posted: September 06, 2004 at 1:34 AM
If I'm not mistaken, most use a pulsing ground, but I would just cut the wires and test them with a multimeter to be sure.
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If it don't fit, Force it.
If it breaks, You needed a new one anyway!
Posted By: jmr964
Date Posted: September 06, 2004 at 4:10 AM
Yes I think I will be testing the wires just to be sure. I was hoping it would be pulsating ground outputs. I have a 04 Dodge Dakota without the factory security system but it still has the secuirty light in the dash. It too is an led that lights up the word security in the instrument cluster. All it needs is to be grounded and I found the wire for that so I will just be hooking it up to the led port on the Viper rather than using the LED supplied. Thanks Jason
Posted By: extreme1
Date Posted: September 08, 2004 at 12:57 PM
Jay, just hook up the blue wire from the LED output.
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Shaughn Murley
Install Manager, Dealer Services
Visions Electronics
Red Deer, Alberta
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