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3 speed wiper motor cap - does it look right?

Mopewbie

Well-Known Member
Joined
Jul 21, 2021
Messages
58
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Location
Ash Vale, England
Hi all.
My wiper never went back down or even park (had no idea about the park thing)

I always had to turn it off when it was back at the bottom of the windshield.

Anyway, I removed switch and motor.

I did the bench test (below) on the switch, it's all working.

It looks like this long bit in the picture is not being activated properly on rotation. So question is if it looks ok, of it I have to bend it in the middle or closer to the contact?

Thanks.



BENCH TEST SWITCH AND MOTOR:

In the the OFF position:

B to P
F1 to Chassis Ground
In On Low through High speed positions:
B to F1 {(0 Low) to (-25 High)}
A to F1 ((0 Low) to (-25 High))
B to A
F2 to Chassis Ground

Washer Motor On - No Reading In The Off Position:

B to W
A to W
F1 to W

Three Speed Wiper (Prestolite ERQ-4000 Series) Motor Bench or Firewall Four Wire Terminal Test:

Forward (Slow)

Forward (Slow)

12V+ to Red & Brown
Green to Motor Ground Strap
12V-to Motor G Strap

Forward (Fast)

12V+ to Brown
Green to Motor Ground Strap
12V-to Motor Ground Strap
Red Not Connected

Reverse (Park)

12V+ to Blue
Green to Brown
Green to Red to Motor Ground Strap 12V-to Motor Ground Strap

PXL_20260427_203354714~2.jpg


PXL_20260427_204027632.jpg
 
All sorted.
The contact on the cap was wrong, was sitting under the other contact. (Red line is the right position)
After many tests, I got it sorted FINALLY, been fiddling with this for so long....

Thanks for the help anyway I had no idea about position for A, B, E bodies...

I'm so happy that the wipers are fully funcional and hidden instead of just tuning it off when they were down!

PXL_20260428_185126173.jpg


PXL_20260427_204027632~2.jpg


PXL_20260428_173015808.jpg
 
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