Fitting remote locking to 124

[Chazchuzzlewitt]

hello, I've got hold of a remote locking kit I want to fit to my 124. I understand I need to connect it to the vacuum pump under the back seats, but I'm guessing it being Mercedes the wiring will be completely non-obvious on what goes where.
Anyone done this before who can offer up any advice?

cheers.

 

[190D]

Any of the wires on the round three pin plug operate the switching motion of the vacum pump.

The flat plug is the power supply for the vacum pump.

 

[Chazchuzzlewitt]

ok- the remote lock I have has 2 wires - 1 for lock and 1 for unlock- any advice on the connection of these?

 

[smee]

use a standard test lamp (not an LED 1) test for a feed on the pins when u hit the right 1 the doors should lock or unlock this will also tell u thats it a negative pulsed system.

 

[SNAP ON]

ok- the remote lock I have has 2 wires - 1 for lock and 1 for unlock- any advice on the connection of these?

You will find three wires at the pump,one is an earth,the other two are open and close wires

 

[Chazchuzzlewitt]

Actually got 2 connectors- 6 wires (2 green, 2 blue, 2 yellow) on the round connector, and the flat connector has red/brown power wires.

My remote locking relay has 12v power/ground, plus the 2 lock/unlock wires.

So excuse me for asking for this in idiot terms, but I presume I connect my 12v power to one of the red wires in the flat connector, and then the 2 lock/unlock wires to 2 of the wires in the round connector?

 

[Chazchuzzlewitt]

arg

I managed to get the doors to lcok, but not unlock... doing my head in now!

 

[smee]

how did u get it to lock?

 

[Chazchuzzlewitt]

A wire from the locking relay directly connected to one of the 3 pins on the the round connector on the vacuum pump would activate the locking, but not the unlock. I'm guessing it's something to do with the pulse length?