door lock relays giving me a headache

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=95783
Printed Date: May 19, 2024 at 1:03 AM

Topic: door lock relays giving me a headache

Posted By: frans-c
Subject: door lock relays giving me a headache
Date Posted: July 20, 2007 at 5:01 PM

I currently have a Valet 712T keyless-entry kit with priority door locking installed.

I'm in the process of installing a doorlock switch; having to lean over every time somebody wants to climb into the car after I've started it, is rather frustrating.

This is my relay setup:

posted_image

Keep in mind that I want to retain my priority door unlocking, hence the reason for the three relays.

Now, here's my problem: All my door locks are reversed in their action, i.e. I now have priority locking, doors unlock when I turn the ignition on, etc.

I know that all I have to do is to remove my door panels again and simply reverse the lock wires (I did the installation myself, no problems there).

But why, WHY is this happening?

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F R A N S
1985 Mercedes-Benz 230E
320 000 km / 199 000 miles
Full MB Service History

Replies:

Posted By: enice
Date Posted: July 22, 2007 at 2:10 AM

Simple. Three relays needed

The first two are done in this way

Both 87 and 85(two relays)----12v

1 of the 30----one motor wire=====1 of the 30----one motor wire(use both left of motor wire on same 30 and on the other too)

Both 87a---ground

Now with the swith you would take one of the wires and connect to one of the 86 and the other to the 2nd relay's 86.(your doors are now together, also connect the valet lock and unlock wires to these as well)

The third relay is simple.......85---12v, 86---priority wire from valet system, 87--12v and you would cut the DRIVER motor wire that when receives 12v it would unlock the door. connect motor side wire to 30 and connect relay side to 87a. This should fix your problem...Good Luck.

To your other question....switch the green and blue wires coming from the valet system....

Posted By: frans-c
Date Posted: July 22, 2007 at 6:07 AM

I'm an idiot, BIG TIME!!!

Yesterday, I intended on removing my door panels and reverse the actuators' wires, seeing that it would solve my problem. However, I first wanted to complete my door lock switch - I simply had to complete its wire harness and mount it.

I used an OEM Mercedes-Benz sunroof switch - it's the only switch that vaguely represents a door lock switch. Now, I have a proper wiring diagram of my car that I used for the power window installation, so I'm quite familiar with the window switches connections. I regard myself as not a total noob when it comes to these types of installations; I converted my car from manual windows to brand new genuine OEM power windows and incorporated two Directed 530T window modules and also the Valet 712T kit and all door lock actuators myself. Here are a few photos of my installation: alarm pictures

Well, I THOUGHT that I knew which connectors to use for the switch. For the life of me, I don't know why I didn't walk the few feet to my room and double check the connectors beforehand...laziness.

Long story short, I completely fried the locking circuit of my Valet 712T module in addition to a few of my actuators. I re-connected the fried circuit on the board, but it seems as though the relay is shot.

The saddest part is that I imported the unit from the US to South Africa. I really don't want a Chinese knock-off unit. I think I'll order the module only, and buy the actuators locally.

Guess it's one of those lessons one has to learn.

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F R A N S
1985 Mercedes-Benz 230E
320 000 km / 199 000 miles
Full MB Service History