mine just died too so I just wired a pushbutton that runs to both sides of starter. Still turn your ignition on and hit it or troubleshoot purple wire back.
will look for some pig tails then and maybe I'll see how they're hooked up too. had power to center one and grounded each side and both and nothing. assume motor housings grounded on firewall so not sure if it's bad. not sure to test. can figure the switch out if I can get motor working
they're not there. old owner has so many dumb problems on this thing but trying to go through them. just like the wire tie connecting what I assume is pump connectors. assume middle is their power that ram inside behind switch
trying to fix my 75 c30s wipers and they have all wires removed from switch and motor and wondered what I have to do to fix. or may put my 85 s10 motor on if I can't figure it out.