97 cadillac deville, viper 5701, xpress pljx

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=130014
Printed Date: May 09, 2025 at 1:12 PM

Topic: 97 cadillac deville, viper 5701, xpress pljx

Posted By: nosubstitute
Subject: 97 cadillac deville, viper 5701, xpress pljx
Date Posted: January 03, 2012 at 1:13 PM

Looking for some direction please. I have a '97 Cadillac Deville that I'm trying to install a Viper 5701 remote start, and have purchased the XpressKit PLJX to get around the VATS system. I've looked at the XpressKit instructions and don't understand the diagram. I wired H3 harness for the 5701 as in the installation manual, and now am trying to figure out which wires from the PLJX I need to connect to.

This is the first time I've installed a remote start with one of these by-pass kits and I'm really struggling. Please help!

Replies:

Posted By: Twelvoltz
Date Posted: January 03, 2012 at 7:23 PM

I know that you have money invested in that bypass, but I find that PLJX to be cumbersome for VATS. The VATS system can be bypassed with a relay and a resistor.

Have a look at this link.

If you really want to use a module, I would suggest the ADS-DL from Idatalink.com.

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Installer, IT support, and FFL. I need less hobbies.

Posted By: nosubstitute
Date Posted: January 04, 2012 at 11:55 AM

Thanks for the response and the link. It seems rather simple. What's the easiest way to measure the resistance? I have a decent digital multi-meter...

I went with the PLJX based on the info on the Directed Electronics site. After looking at the idatalink site, that appears to be an easier install.

Posted By: nosubstitute
Date Posted: January 05, 2012 at 11:37 AM

Found a site the provides instructions to determine the resistance of the VATS key:

https://www.vatskey.com/vats/vatskeylock.htm

I'll give this a try tonight.