74 cj-5 wiper motor

could i get some sugestions about the best way to ground wiper motor 74 cj5 fiberglass body tried differant ways that work for a while then quit can i tap into the motor wiring harness and what color wire every thing else in dash works fine tried different motors same thing thanks

 

Why don't you run a dedicated ground wire to the wiper motor? Put a ring connector on it and bolt it to one of the mounting bolts. Run the other end to a good ground on the body (is it steel?) or chassis. The body of the wiper motor normally grounds to the windshield frame through the mounting bolts.

 

iv'e tried that a couple of times on different motors still only works for a little while also changed different transmissions

 

mine has a ground from the window frame to the steel dash which is grounded to the battery

 

Please explain this a little further.

If you run a ground wire, it will work. You can choose to run a wire or strap from the windshield to the frame, or run a wire directly from the motor case to the frame. You have no alternative.

If there is something wrong with the motor, a different ground will not help. If your wire is somehow failing by breaking, corroding or whatever, then you need to improve your wiring technique.

 

When I dropped the fiberglass body on my '74 CJ, I desided to fix the ground issue once and for all.
I ran a ground wire from my fuel tank, tied in my tail lights, ran it up split it off to the bottom of the metal dash, tied in the front lights in the metal fenders, engine, alt and batt.
I tried to ground eveerything twice!
I used a 10 gauge wire as the main feed and branched off with 12 gauge, soldered, used those shrink tubig and sealed the ends of that with silcone. (I ran a GREEN wire, so I know it's ground, like a house instead of a black which seems to be everywhere in my wiring harness).
Ran a wire to the new metal windshielded frame and one to the wiper motor.
So far, (knock on my wooden head), I haven't had a ground issue. (even my dash lights are working!)
I've learned from owning a pile of ol' British bikes, you can't have enough ground wires.
Make sure you clean off the area your grounding to to BARE metal, (I learned that after taking out a ignition box on my ATK off road motorcycle).
Joe
When in doubt, run another wire and curse! The best jeep is a scared Sheetless jeep! Works every time!chainsawguy