791xv in a 2000 Ford F350

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=48361
Printed Date: May 28, 2024 at 3:23 PM

Topic: 791xv in a 2000 Ford F350

Posted By: mobilevt
Subject: 791xv in a 2000 Ford F350
Date Posted: January 23, 2005 at 2:57 AM

I am having some problems with this... I just installed this alarm in my friend's diesel truck.

Everything worked fine and worked properly (or it seems)

He called and told me that 20 minutes after arming, it went off, showing the door icon on the remote. He did this several times, same 20 minutes. I'm stumped. Any ideas what that could be? I tapped directly to the door switch wire inside the door to get my door sense. It worked fine when I tested the alarm and it went off when I opened it. Any ideas?

Sean

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Emergency Vehicle Technician
Got Freedom? Thank a vet!

Replies:

Posted By: johnnydi77
Date Posted: January 23, 2005 at 8:41 AM

In that vehicle the BCM shutsdown after a given period of time. When this happens the ddor trigger wire sees a small pulse enough to trigger an alarm but not strong enough to trip a relay. Take a relay put 85 neg door pin of truck, 86 12v, 87 ground, 30 neg door input of alarm.

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John J. DiStefano Jr.

Posted By: mobilevt
Date Posted: January 23, 2005 at 11:15 AM

John, THANKS! I'm going to go back to my friends today... I'll let you know how it went!

Sean

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Emergency Vehicle Technician
Got Freedom? Thank a vet!

Posted By: mobilevt
Date Posted: January 23, 2005 at 4:08 PM

John,

I just installed the relay, it worked beautifully! I wonder how would you know about that fix?

Anyway, MANY thanks!!!

Sean

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Emergency Vehicle Technician
Got Freedom? Thank a vet!