PeachParts Mercedes-Benz Forum - View Single Post - need someone's help who has a THOUROUGH understanding of pre 85 door lock system

the_good_fellow · #5 05-30-2002, 03:29 AM

Ryan,
you are getting close. I had posted a thread about this a while back. Here, I'm posting it again. go to the front passenger side remove the floormate, there is a piece of black plastic panel, lift it up you'll see a 4 way connector with yellows vacuum lines connected to it. one is the cabin line you mentioned. the other three go to each door(passenger and rear doors) disconnect them one at a time and plug it with golf tee, turn the key on driver's side door to lock or unlock. it the pump getting time out you'll have to disconnect/connect the wired connector at the pump. repeat these steps for the rest of the doors.

The other way around is to use a "Mityvac" on each line to the door.

Make sure there is no crack on the 4 way connector too.

Good luck!