Brian McL

Does anyone now how to feed 12V power to the cluster, on the bench, so it will light up all/most of the lights? Mine is out of a 1993 400SEL and has the round socket connectors like the picture. I have all 4 female plugs that I can feed power through. I just need to know which wires on the plugs to join connect to 12V. Thanks

oldsinner111

I would turn my key on,and carefully find which wires are hot in the car,to which plug.

Russell Ormerod

Did u come right?

Brian McL

No...still trying to figure it out.

Russell Ormerod

Plug 2 pin 12 Battery supply
Plug 1 pin 5 ignition supply
Plug 1 pin 1 ignition supply
Plug 1 pin 10 ground
Plug 2 pin 11 ground

Brian McL

Thanks Russell...
OK, so...Plug 1 join pin 5 and pin 1 to battery positive and pin 10 to neg.
Then on plug 2 pin 12 to positve and pin 11 to neg.....right ?
Just want to be sure before I blow it up.

Russell Ormerod

Correct. What I would do is connect your grounds and your battery supply direct to cluster and all the ignition supplies via a switch. That way you can simulate the ignition switch on the bench..

Brian McL

Perfect...thanks Russell