Wiper motor switch replacement

[ncm]

@Gordon_Sauer

Somewhere I believe I read this is because a power wire is grounded out when the park switch is activated (plunger pushed in) suggesting a mixup in the wiring, that maybe the Park feed 12 V and general feed 12 volt are mixed, but it doesn’t really seem possible to mix up the wiring since on the +2 since there is a Four wire input from the dash switch terminating in the plastic plug that only fits one way into the park connector clipped onto the side of the wiper motor, which then goes to the three wires to the spade terminals (red yellow and blue) that plug into the 14 W motor. So tough to figure, Gordon.

Hi Gordon,
As you say, the wiring diagram shows 4 wires connected to the dashboard switch and appears to indicate that they are connected to the ‘corner’ terminals. This would make sense as the two middle terminals are connected across the back of the switch shown in your picture above.
Would you check the terminal connections with the switch in the off/slow/fast positions using the numbers in the picture below?

I have quoted you above from an earlier post in another thread as I am confused when you state that there are 4 wires from the switch to the motor plug (or have I misunderstood your comment?) There are only 3 wires from the switch to the motor plug plus an earth and a seperate live feed for the park function.

Brian.