Sorry Davo, I'm slack! I've meant to take a few photos for you.
No time like the present!
Here's Doris' wiper motor - looks just like the standard one, but with 4 wires & the relay.
Perhaps an auto electrician could supply a relay that would work? Might be like some other thing.
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Note that this is a teardrop deluxe one, the later one is different, round motor & smaller relay.
Works differently to! When you switch off, the motor reverses direction, does the part sweep, then a full sweep to park. I know, wierd as!
Cheers, Matt.