Thanks for the help.

I think I have my head around most of this.

One last question. Are you replacing an actuator or adding one?

__________________
2009 ML320 Bluetec
1985 300CD
1981 300TD

Past Mercedes
1979 300TD
1982 300TD
2000 E320 4Matic Wagon
1998 E430
1984 300SD
1980 300SD

Has anyone yanked out the vac locks in a 123 and put in electric?? Seems like it shouldnt be to painful, and eliminate a big headache.

Adding one. The one you add lets the keyless entry system lock/unlock the driver's door - and from there, the stock locking system takes over and locks everything else just as if you'd locked the door by hand.

I did speculate on replacing the sensor in the driver's door with a 5-wire actuator, but I don't know if it'll work and there's no pressing reason to do it.


I did, it wasn't too bad. Then again, I had all the interior (seats, etc.) removed already for other reasons, so running the new wiring throughout the car was simple.

You'll need 6 actuators: at least 1 five-wire one (to control lock/unlock from the driver's door) and 1 2-wire actuator each for the passenger door, two back doors, fuel flap, and trunk or hatch.

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'81 300TD Wagon 355k (Miss Diesel)
'83 300SD 180k
'84 500SEL 190k (Parting it out)

Okay thanks.
So obviously you add a line from the new actuator to the existing line. I have some extra I pulled from my 116 that I parted. Looks like they will go to good use...
Thanks for the help!

__________________
2009 ML320 Bluetec
1985 300CD
1981 300TD

Past Mercedes
1979 300TD
1982 300TD
2000 E320 4Matic Wagon
1998 E430
1984 300SD
1980 300SD

I originally started out doing the switch as stated in this post- adding an acuator to the drivers door in my w126. However the pump in the trunk kept giving me problems. At that point I added acuators to each door. It was a bit involved running the wires but has worked well since then.

__________________
81 300D Turbo 190K sold
83 300sd 319K best $500 I ever spent-daily driverw/ 2 tank WVO set up