Help with R129 Switch Location
 

Can anyone please tell me the location of the "Soft Top Raised switch" labeled S84/4 in the schematics? My car is a 1990 300SL.

My convertible top will not automatically latch at the windshield when being raised even if I manually pull it down tight against the latches. I have to interrupt the sequence and manually lock the windshield latches before finishing, and I suspect S84/4 to be the problem.