I have determined my switch In my 1985 700R4 to be normally closed and need a normaly open one instead. The issue I'm having is I can't find an N.O. one with 2 prongs like mine.


I'm not sure if this is the right part...
http://www.transmissionpartsusa.com/...-000047382.htm

Or
http://www.gmpartsdirect.com/results.cfm

This is with searching a part # of 8643710

Are these right? Can I just modify the wiring to use a one terminal switch?


(P.S. visited my local transmission place and they proved to be very unhelpful in getting me one so this seems to be the only practical way)

 

Bump

 

Assuming your are working on the TCC ???
You would need a 2 wire lock up solenoid (late style) with the power run through the solenoid then grounded by the 1 wire switch
as opposed to your current setup with the power going to ground through the self grounding solenoid after going through the switch