f250 power door lock woes

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=108327
Printed Date: July 04, 2025 at 9:15 PM

Topic: f250 power door lock woes

Posted By: modmotor1
Subject: f250 power door lock woes
Date Posted: October 22, 2008 at 12:28 PM

Hey guys thanks in advance but heres the skinny on what i have:

2006 super duty with keyless entry...... viper 771xv remote start etc....... i have the DEI 451m and thats what i have problems with

1. I hooked up 451m as follows

I cut the pink with white wire in drivers kick panel that showed +polarity with door lock and the black with white.

The voilet/blck went to 12 constant which is 87 on 451M

gr/bl lock output (30) i connected to the side of the black wire that showed 12v when the switch was closed (blck/white going up the harness towards door)

wh/blck (87a) i connected to the other side of the cut blc/white

blu/blck unlock output (30) went to pink/white that showed power when switch was closed (wire headed up harness towards door)

br/blck unlock output (87a) went to the other side of pink/white

2. When i push lock (or unlock) i have polarity coming out of 451m as i should have on both 30's but the doors do not lock or unlock

3. Even if i power probe the wires that show polarity when the lock button on the vehicle is closed the locks dont open or close either.

4. When i use viper keyless fob i feel the contacts inside switching so i feel that up to there i am good with my wiring as i have 12v on both 30's when its called for.

What step did i skip? i followed the directions to a T but maybe there is something else i am missing? Do i need to bypass these connections and go straight to the door actuator?

Replies:

Posted By: ckeeler
Date Posted: October 22, 2008 at 12:34 PM

they still work with the switch right?

Posted By: modmotor1
Date Posted: October 22, 2008 at 12:36 PM

yup....... switch, outside keypad, and factory keyless entry still work.......... any ideas?

Posted By: ckeeler
Date Posted: October 22, 2008 at 12:39 PM

yep i know what it is. ive run into this on these ford supers before. pm me

Posted By: mikvot
Date Posted: October 22, 2008 at 1:22 PM

If the truck has factory keyless, then the BLACK/ white, and WHITE/ red are (-) doorlock wires. You do not need to cut these 2 wires. On the 451 m, the violet/ black goes to ground, not 12 volts. 30 GREEN/ black will go to the BLACK/ white of the truck. 30 blue/black will go to the WHITE/ red of the truck.

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Posted By: modmotor1
Date Posted: October 22, 2008 at 4:22 PM

U guys are the best!!! I will try this out later and get back.......... i figured this was something stupid and the viper EXPERTS at their HQ are no help

Posted By: modmotor1
Date Posted: October 22, 2008 at 6:33 PM

mikvot wrote:

If the truck has factory keyless, then the BLACK/ white, and WHITE/ red are (-) doorlock wires. You do not need to cut these 2 wires. On the 451 m, the violet/ black goes to ground, not 12 volts. 30 GREEN/ black will go to the BLACK/ white of the truck. 30 blue/black will go to the WHITE/ red of the truck.

That worked thanks a million!!! problem solved..... it doesnt work progressively but i dont really care about that just as long as the doors unlock!! you guys are the best