I need help wiring the wiper in my 64. I have the 2 speed model with depressed park. Bench testing the motor, it works ot a slow rate, not sure whether it is actually up to the 34 rpm that is specified for the slow speed. Page 12-34 of my shop manual shows a bench test diagram, with the tangs on the motor numbered 1,2, and 3 with #1 being closest to the actual motor. With power to all 3 tangs and the body grounded, it repeatedly attempts to park itself. If I remove the #2 lead, center, it runs fine, and if I have only the first one connected, it runs slightly more slowly than with 1 and 3 in place.

The switch shows only 1 wire coming off of it in the diagram, p12-43. When I check my switch for continuity, I get cont. between 2 tangs only on the low speed position. I seem to recall that high speed did not work prior, may have been the switch, have no cont on high.

I need to wire it though a toggle now. I understand it will need to have a constant hot feed. I'm not expecting to make high speed work. Constant hot to which tangs on the motor, then switch the ground on which one? Any idea how to make park work?

Thanks,

Devin

The two speed on my 66 was not wired anything like I expected (from 25 years of Mustangs).

It has power to the motor all the time when the key is in acc or run. The switch on the dash grounds it to the metal dash to run the wipers, and that turns the parking switch on. Then the two grounds are in series.

When you shut them off, you remove the ground via the switch, and when the motor moves to the park position, it opens the park switch and it stops.

So you have to have the motor case grounded to the body via at least one of the mounting bolts to make the ground path for the park function. If you test it off the car, you have to duplicate the ground configuration.

The

Thanks for the response. I've been testing it on the bench so far. As it is, when I remove ground it immediately stops. I take it I need to leave the ground attached to the wiper body, and switch an additional ground?

Devin

case ground is used for park function, the dash switch supplies ground to the motor coil for hi/lo function

I need help wiring the wiper in my 64. I have the 2 speed model with depressed park. Bench testing the motor, it works ot a slow rate, not sure whether it is actually up to the 34 rpm that is specified for the slow speed. Page 12-34 of my shop manual shows a bench test diagram, with the tangs on the motor numbered 1,2, and 3 with #1 being closest to the actual motor. With power to all 3 tangs and the body grounded, it repeatedly attempts to park itself. If I remove the #2 lead, center, it runs fine, and if I have only the first one connected, it runs slightly more slowly than with 1 and 3 in place.

The switch shows only 1 wire coming off of it in the diagram, p12-43. When I check my switch for continuity, I get cont. between 2 tangs only on the low speed position. I seem to recall that high speed did not work prior, may have been the switch, have no cont on high.

I need to wire it though a toggle now. I understand it will need to have a constant hot feed. I'm not expecting to make high speed work. Constant hot to which tangs on the motor, then switch the ground on which one? Any idea how to make park work?

Thanks,

Devin

constant 12v goes to the middle prong, I beleive "#1" is Hi speed and"#2" is lo speed

Terminal 1 is closest to the motor, power connects to terminal 2. Ground 1&3 motor runs low speed. Ground 1 only motor runs high speed. Ground 3 only off or park.

I got frustratedwith the 2 motors I had, knowing 1 wasn't working properly before and no idea on the other, couldn't make it work at all. I generally try to repair rather than replace, but this time I cheated and ordered a reman from the local parts house. It's supposed to be in by the weekend, so i'll play with it more then.

Thanks for the advice. I'm looking forward to having it work properly.

Devin

Update- New motor arrived the other day, after having been ordered wrong the first time. Finally got some time to play with it today. It does work as described. My main difficulty with it was the picture in the manual for testing it. It appeared to me that power was supplied to all 3 terminals, as well as ground to outside terminals. Made no sense to me. To get what I want out of it, low speed and park, through a toggle switch, I have to feed it constant power on #2, constant ground on #3 and switched ground on #1.

Got that worked out on the bench and mounted it, hooked it up to the wiper linkage, reinstalled the cowl vent panel, (had to remove to install the nut on the motor to the wiper linkage,) sprayed some water on the windshield and installed a wiper arm and blade on the driver's side. Rigged my test setup on it, no wires yet, and turned it on. IT WENT THE WRONG DAMN WAY!!! Started in the park position and went down from there, scratching the hell out of the cowl vent panel. Turns out I had installed the arm for the linkage 180* out.

Removed vent panel again, corrected the linkage and touched up the scratches, then got into wiring it. I installed a Painless harness in my car a number of years ago, and the wipers had never been wired up, which is waht started this whole post. I found the wire I need to power it, but I had made a mess of everything when I installed the harness kit, so it all came back out today. I did some bench repairs and additions while I had it out, then started working on stringing it in place properly. Didn't make much progress then had to quit for the day. Hope to get back to it soon.

In any case, thanks for the guidance on the terminals. Will be very nice to have working wipers once the harness is back in place.

Here's another question: Is there any product out there to protect the wires and loom them together that doesn't look cheap and cheesy like the plastic convoluted loom does?

Devin

Well, it required a re-wire of the entire car and way too much time, but after 14 years I have working wipers again, as well as newly-mounted turn signal indicators and other small repairs.

Thanks again to all who responded.

Devin