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99 superduty pdl to dei relay

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=102154
Printed Date: July 12, 2025 at 3:21 PM


Topic: 99 superduty pdl to dei relay

Posted By: timlutz
Subject: 99 superduty pdl to dei relay
Date Posted: February 13, 2008 at 8:57 AM

Anyone have a wireing diagram or schematic of the power door lock system on a 99 f250 superduty truck that did not come with keyless. I am trying to hook up the keyless part of my alarm system. It's a DEI alarm and I have the 451M relay. I know someone has done this install.
Thanks



Replies:

Posted By: Twelvoltz
Date Posted: February 13, 2008 at 9:07 AM
Take a look at the installation manual for your 451M it lists relay pin numbers. Use those numbers with the ones listed in this diagram. The 451M is simply 2 pre-wired relays in a nice small enclosure. If you are hooking up a DEI system to control the 451M, you do not need to concern yourself with the connections on pins 85 and 86 as they are done internally on the relay. If you are not using a DEI system, the small 3 wire harness on the 451M needs constant hot to the red wire and negative triggers are the green (lock) and blue (unlock).

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


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