That is a good test for a turbo diesel tow rig. My Dodge does not love it.
The old rig would pull 65 through there, but not 80. We’ll see how 300 extra foot pounds and 4 extra gears does.
That is a good test for a turbo diesel tow rig. My Dodge does not love it.
The old rig would pull 65 through there, but not 80. We’ll see how 300 extra foot pounds and 4 extra gears does.
I do get power to the plug
To which plug? The one on your hood right at the motor?
How are you testing for power. This would be a good time to use an incandescent test light, not a volt meter.
Unfortunately, wiper motor control has always confused me. None of the vehicles with which I was involved had wipers. For instance, I can't wrap my head around everything inside the schematic for the MFS and the wiper motor:
View attachment 523570
That said, the first thing I'd do is check the ground conductor by bypassing the wiring harness ground circuit and going directly from the motor connector the battery negative, since it's not uncommon for ground paths to be disrupted by corrosion. According to the manual, the ground is through Pin 4 on the motor connector:
View attachment 523571
Correct.
What is the benefit of a test light over a voltmeter?
If you're getting power to the plug, like Sab, I'd start with the ground.
Also, have you applied power to the new and old motors yet to see if either work? Your original might be fine, or you might find the new one to be a dud.
I have applied power to the old motor, hitting the ground, and putting power to the other connectors, and no dice. I assume it should be that simple, but not sure.
I have applied power to the old motor, hitting the ground, and putting power to the other connectors, and no dice. I assume it should be that simple, but not sure.
I'd think so, but I don't actually know.
I don't think it's that easy. About a decade ago, I had trouble with the rear wiper motor on my Expedition. I don't know how wiper motors work, and I never figured it out, but I did notice that you couldn't just apply voltage to the motor to test it. I think it has something to do with how it "parks" itself when power is cut off.
I'm assuming, but sometimes voltage can be present, but as soon as you throw a load on a circuit it will act up. Incandescent can add the load you need.
This is dead nuts on. An ohmmeter, by design, puts a very small load on the circuit (because if it put a significant load on it, the measuring tool would affect the measurement.) I don't have a power probe, nor have I ever used one, but I would suspect that it can put a load on a circuit somehow. It seems that would be one of its functions.
I thought the power probe was pretty cool, and would work great for testing the motor - right up until I actually tried to test the motor…