Quote:
Originally Posted by 72bigred
Hey all, looked at a thousand threads and tons of diagrams.. My books do not show this.. This motor came with a truck I am building, I assumed it was from a 61.. I just cannot figure this thing out. I labeled the opposite end of the one harness I have in case the colors did not show up in the pic. As you can see its a 4 prong on the motor and of course 2 on the pump.. it appears the open prong is jumped to where the pink wire is currently plugged.. Thanks in advance.
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I'm not familiar with the 63 & earlier factory color codes for the 2-speed wiper motors. However, with that type of 2-speed motor, the two center terminals (that are stacked above one another on the motor) are usually the +12V feed. One of those terminals receives power from the wiper fuse while the other terminal feeds power (via as short jumper wire) over to the washer pump solenoid.
The remaining outer two terminals on the motor are switched grounds that should be wired directly back to the dash switch. Some motors require both the switched terminals to be grounded for low speed and only one for high. But I think these round 2-speed motors might only need one terminal grounded for low and the other terminal grounded for high.
Finally, the remaining terminal on the washer is also a switched ground that should be wired directly back to the dash switch. Pushing the switch should ground that terminal, completing the circuit to energize the solenoid that engages the pump mechanism.