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Viper 791, trouble with starter kill

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=58763
Printed Date: May 29, 2024 at 6:59 AM


Topic: Viper 791, trouble with starter kill

Posted By: dlp4
Subject: Viper 791, trouble with starter kill
Date Posted: July 03, 2005 at 3:36 AM

For some reason the on-board starter-kill wont work. The starter will still connect after the alarm is set.

When the alarm is set, the ORANGE / black wire from the control module to the key switch relay sends a negative signal to activate the relay which I think is correct. And when I took the cover off of the relay box and jumped the relay to test it it seemed to work ok. But it doesn't activate the relay when it's plugged in.

A couple things I noticed that seemed odd were when the relay box is plugged in and the alarm set, I read 12 volts at the ORANGE / black wire instead of ground or negative. And I also read 12 volts at the orange ground-when-armed- wire on the H1 harness when the relay box is plugged in instead of ground. I read ground on these two wires when the relay box is unplugged and the alarm is set.




Replies:

Posted By: dlp4
Date Posted: July 03, 2005 at 12:01 PM
I should have mentioned this is a 1967 Plymouth Barracuda...thanks




Posted By: Teamrf
Date Posted: July 04, 2005 at 2:59 AM
The 791 should have a built in starter kill on it. There should be a thick purple and green wire for the starter kill. Just connect the purple to the motor side, and the other to the key side. That should work

-------------
~The Rookie~
Rookie of the year that is...
Don't let the smoke out of your equiptment..it doesn't go back in.




Posted By: dlp4
Date Posted: July 04, 2005 at 3:22 PM

Thanks, I made these connections but I still had problems. But I discovered what the problem was.

On older cars with ign1 for run and ing2 for start, ign1 circuit powers the relay that prevents hot wiring the ignition and the ign2 circuit powers the relay that prevents using the key while armed.

Since the power is switched between these two circuits (start and run) only one relay is activated at a time. In order to activate both relays at the same time, the ballast resistor in the cars ignition circuit has to be in place so both relays will see 12 volts. The ballast resistor was removed so I replaced it and it works fine. A little tricky and frustrating but I got it.

Thanks






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