791xv, 98 Expedition

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=71258
Printed Date: July 21, 2025 at 2:28 AM

Topic: 791xv, 98 Expedition

Posted By: stonecole
Subject: 791xv, 98 Expedition
Date Posted: November 24, 2005 at 12:40 AM

I have several print outs for 98' Expedition. Trying to install 791xv alarm system. According to these print outs the door trigger wire is light blue/white, but when I put my meter on the wire there's no voltage. And I also was told that this wire would come from the anti-theft module where the wires for lock/unlock are located also. Any help is greatly appreciated.

Replies:

Posted By: Mike M2
Date Posted: November 24, 2005 at 11:31 AM

Use the BLACK/ blue wire coming out of the drivers door harness. You can also get it in the harness traveling up next to the keyless entry mod. It's a positive door trigger....

-------------
Mike M2
Tech Manager
CS Dealer Services

Posted By: stonecole
Date Posted: November 24, 2005 at 4:09 PM

Thanks Mike I'll give a try and let you know if I got it or not. One more thing Mike, do you know what wires to cut for key side and starter side for the remote start?

Posted By: Mike M2
Date Posted: November 24, 2005 at 6:09 PM

The starter wire is RED / blue at the ignition switch.

-------------
Mike M2
Tech Manager
CS Dealer Services

Posted By: stonecole
Date Posted: November 24, 2005 at 11:37 PM

Thanks again.

Posted By: stonecole
Date Posted: December 19, 2005 at 7:48 PM

Does anyone know if there's an easier way to get to the techometer wire in a 1998 Expedition 4x4. I know it's pink/white, but the harness under the dash, I cannot get to it. Any help is greatly appreciated. Thanks

Posted By: chris354
Date Posted: December 19, 2005 at 8:11 PM

If you are using a dei just go to the uncommon injector wire might work with other systems also just not for sure.

Posted By: stonecole
Date Posted: January 22, 2006 at 11:06 PM

I'm installing a 791xv on a 98 Expedition 4x4. What wires are NOT being used. I'm not adding anything to alarm, just original factory system. A little confused on what wires shouldn't be used.

Thanks.