The 1970's BMW 2002 uses the same switch as the our cars
SAE QC 72 DKS (late) PN 61 31 1 356 193 - 8 pin with resistor.
The model I was looking at ar a local Cars and Coffee had one hanging out as he had the center console out. I found out BMW uses a cylinder plug on the wire harness to connect the switch. I have yet to find a source for the plug though. Check out the picture. It would have made servicing the switch on our cars a lot simpler. You still would have to reach behind the dash to loosen/remove the nut so you can pull the switch out though.
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