50/58 Willys Wagon RAT

Dirtyrat · Jan 8, 2013

It has the wiper motor wiring there, but the switch for it is vague, yes.
I'll try and locate you one later today.

Dirtyrat · Jan 8, 2013

taken from: http://www.vitessesteve.co.uk/LucasStuff/LucasStuff2.html

1 - Earth
2 - Auto Park switch
3 - Fast
4 - Auto Park +ve supply
5 - Slow

HOW DOES IT WORK
Flicking the toggle switch to the first position (slow operation), power is applied to the relay, closing the contact and supplying power to pin 5 on the wiper motor (via pin 87 and 30 on the relay). The Auto Park connection on the Wiper Motor (pin 2) is not connected to anything while the relay is energised.

Flicking the toggle switch to the second position (fast operation), power is supplied directly to pin 3 on the Wiper Motor. At this point you might expect the relay to turn off, but in fact the relay remains turned on by current leaking back out of pin 5 (slow) of the wiper motor (via pin 30 and 87 of the relay). The Auto Park connection on the Wiper Motor (pin 2) is not connected to anything while the relay remains energised.

Flcking the switch to off, causes the relay to turn off, this connects pin 2 of the Wiper Motor to pin 5 of the Wiper Motor (via pin 87a and 30 of the relay). What I think happens here is that power is connected to pin 4 of the Wiper Motor, this must be internally connected to pin 2 via a switch, which allows us to continue to supply power to the slow pin 5 of the motor until it reaches the park position when pin 2 turns itself off.