Hi people!

I'm transplanting engine and gearbox from a W124 OM606.910 to a G-wagen. Engine is finally in place. Now I'm working on fitting shifter and linkage.

I've removed the shifter from the W124. It's the 722.4 model. I know of the neutral safety switch, which is a long and flat electrical connector. But on the shifter there are also two wire joints that somehow unlocks the shifter - what are they? Are they also related to the NSS?

Please see attached pictures. Any insight is greatly appreciated.

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1985 W460 300GD OM617.912 w/ STT turbo (ongoing OM606 engine swap)
2011 W212 E220 CDI

These are ball sockets that accept Bowden cables.

The one in the front goes to the brake pedal, and prohibits shifting out of P unless the brake is pressed.

The one in the rear goes to the key cylinder to prohibit removal of the key unless in P, and also prevent shifting out of P without the key..

Both of these interlocks are due to federal mandates in the early 90s precipitated by the infamous "runaway Audi 5000".

Check out this thread where someone found a shifter from a later 124 and transplanted it into a first gen 124 without the interlock.

http://www.peachparts.com/shopforum/diesel-discussion/296365-retrofit-brake-pedal-shift-interlock-1987-w124-3.html

Note: Neutral safety switch and reverse lights are handled in the transmission on a 722.4 similar to all earlier models. Not until the 722.6 and the W210 did the reverse lights come up in to the shifter, and neutral safety is part of the conductor plate. The 210 with 722.6 has a "R/P lock solenoid", this is engaged by the transmission computer to prevent you from going into R or P at speed

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The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech

Thanks a bunch! I'm always amazed by the vast mount of knowledge on this forum! I'll check that link. Thanks again!

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1985 W460 300GD OM617.912 w/ STT turbo (ongoing OM606 engine swap)
2011 W212 E220 CDI