So the switches on the 300SD are physically shot, the little tabs are completely broken, they've been that way for a while. I want to replace the switches, but for the 1981 model, they've been soldered on, where I think the 1982 and newer models just have simple plugs. Do you think if I found some switches from a newer W126 and did some splicing, I could make the plug type ones work?

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'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.