Tom, before you rip the wiring apart, try a simple check. When my '72 wipers quit, I unplugged the multi-connector near the wipers in the right rear of the fends and sprayed both halves out with Contact Cleaner. When it dried, I plugged them back in and they've worked ever since. That was in 1985....

Thanks for that advice. The switch housing is closed up rather solid, so I don't want to open it. It appears to transmit power, but I cant tell yet when/where it should in different positions. I might look at the wiper motor connections as well, the wipers have moved a few inches during all of my attempts to figure it out.

Note that during my exploration to find why the wipers quit in mid-stroke, I removed the black plastic 'Lucas' cover on top of the wiper motor. It was extremely fragile; I cracked it during removal. Fortunately the plastic glued OK. Inside are two reversing switches but cleaning them did nothing. My problem was in the wiring loom's multiconnector pins. I'm not good with wiring; my only recourse is to use a good multimeter and find where the electrons stop....

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