Ok I got the wiper mechanism cleaned up and lubed and was ready to install.. So I thought....
I wanted to be sure it ran and was in the park position before I replaced it. looked up the procedure in my Haynes manual, ( Clymer manual has same procedure)
Connect a 12V Neg line to ground.
Connect a 12V Pos line to both terminals 53 and 53a.
When motor starts to run disconnect term 53 and allow motor to park.
Doesn't happen.
As soon as I disconnect 53 motor stops wherever it is.
power to 53 runs low speed.
power to 53b runs high speed.
power to 53a alone does nothing.
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Although not in the instructions power to remaining terminal 31b also does nothing.
Checked to be sure all the contacts were touching and they appear to be. Gave them a little brush with a points file to be sure.
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all three are making contact, you can see the tracks in the grease.
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No sense in putting this thing back in until I get it sorted out.
BTW if it makes a difference, car is an early 73. No intermittent wipers. all testing done on bench.
Edit:
Adding another picture, this was taken before I disassembled everything. two red/black wires go to pin 53a. ( on Prosperos wiring diagram it shows 2 red wires - no black trace)
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