Non-op Wiper motor.

I'm getting ready to hook up the wipers on the new ford, but my motor won't turn.

It's a 55 F100, electric motor. 3 Wires, Black, red, green. I'm guessing ground, speed one, speed two?

I'll hook black to ground then run one of the others to power, don't get anything. What am i missing? Could it just be burnt out?

 

Some wiper motors are wired with power going into them directly from the fuse box, then one wire might be ground, and the other wire that goes to the dashboard is the one that turns it on by grounding it through the switch. The self-parking feature of wipers needs constant power supply from the fuse panel. If you turn it off at the switch, the motor will run it until it is parked, and then turn off.

So it might be something like put power to one lead, ground another lead, and ground the switching lead through a switch before it will actually start to run.

I have no idea what the color code is though.

 

It's a guess, but maybe red = + 12 Volts from fuse panel, black = ground, and green goes to the switch on the dashboard (to ground).

You could run it off a trickle charger that has a circuit breaker in it. They don't need a lot of current, and if you wire it up wrong, hopefully the circuitbreaker will keep you from smoking something.

 

HM. I had it turning for like one second but i don't know how i did it.

When you pull the cover, the red and green wires are linked. There's a thing going between their posts that looks like a very fine spring with cotton or somehitng in it. Here's my dilemma...

SOMEHOW, power is getting into the body of the wiper ***embly. I was working on it and tapped a wire from ground to the wiper linkage and it sparked, tested with a light and sure enough, it lit.. So There's one problemm.

Any ideas?

 

The wire known as +12V should be a fused ignition feed and not a battery feed wire. When you turn the car off most of the time the wipers stop at their location.

My guess if you have three wires is that one is the power wire and the other two are the speed wires, with the wiper switch selecting which motor winding to ground.