97 f150 locks

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=99344
Printed Date: May 14, 2025 at 1:34 PM

Topic: 97 f150 locks

Posted By: bigtime95
Subject: 97 f150 locks
Date Posted: November 25, 2007 at 5:43 PM

I put a rs in a 97f150 hooked the relays for the door locks up according to the diagram in the door lock section and it will lock but not unlock. I am getting neg pulse on both sides of the alarm (lock and unlock). Any ideas??

Thanks a bunch!!

Replies:

Posted By: mobile1
Date Posted: November 25, 2007 at 6:05 PM

wrong wire? what wires are you using in the truck? did you test them first?

Posted By: Twelvoltz
Date Posted: November 25, 2007 at 6:13 PM

Ideas:
1. You are on the wrong wire in vehicle.
2. Your RS is not providing enough of a negative trigger output to trigger the factory relay
3. The door lock actuators are on their way out and will need to be replaced soon, try increasing the unlock output pulse length to make up for the dying actuators.

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

Posted By: bigtime95
Date Posted: November 25, 2007 at 8:47 PM

I'm not by the truck now but if I remember right the wires were pink / YELLOW and pink/green. I tested them first and after i clipped the wires they wouldn't work unitll I jumped across them again so I'm sure they are right. My brother took the truck with him so I won't be able to try anything else for a few days.

Thanks

Posted By: bigtime95
Date Posted: November 25, 2007 at 9:31 PM

Pretty sure I figured it out. I used this diagram

posted_image

it shows 85 of the left one and 86 of the right one tied together as 12v, but my relay plugs have diodes in them so I have to use 85's 12v and 86's to alarm output. Thanks for your help and please let me know if this is correct.

Posted By: moonliter
Date Posted: November 25, 2007 at 10:34 PM

bigtime95 wrote:

I'm not by the truck now but if I remember right the wires were pink / YELLOW and pink/green. I tested them first and after i clipped the wires they wouldn't work unitll I jumped across them again so I'm sure they are right. My brother took the truck with him so I won't be able to try anything else for a few days.
Thanks

After you clipped the wires, had you identified correctly the lock / unlock wires are on the switch side ?

Posted By: bigtime95
Date Posted: November 25, 2007 at 10:39 PM

yes

Posted By: moonliter
Date Posted: November 25, 2007 at 10:55 PM

use one lead of your meter on pin 30 of lock relay & other lead on pin 30 of unlock relay, see whether you read anything on the meter when you press lock & unlock on your remote.