bloody thing
I tested the switches and also that bending the wipers had not produced
trouble with extra back torque and driving round via the motor.
Now its all soldered in, the safety clutch operates in one position, too
much back torque. I had tested before fixing the metal casing back into
place around the switch sections and there must be some sort of additional
strain/misalignment.
Anyway it will desolder easier this time.


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/