Wiper motor won't engauge

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  • KaiserMan
    I got the Willys....
    • Jun 21, 2005
    • 8702

    Wiper motor won't engauge

    On my 63 J300. It's the basic Delco 2-speed used from 63 through the 70's on Jeeps and in th e60's on GMs.

    There are three plugs on the wiper motor. I'll call them plugs A, B anc C.

    Plug A is a single tab with a green wire. Plug B is a double tab with (from L to R) a blue wire and a red wire with a white tracer. Plug C is actually on the washer motor, and is a double tab with a yellow wire and a red wire with a white tracer. The washer motor works off the switch.

    I bench tested the motor by running a hot to the red w/white tracer from plug B, and a ground to the blue wire from the same plug. Worked fine.

    All installed, no go.

    I have power at the switch, and at the motor. On both Lo and Hi. Power is always on at the red w/white tracer wire of Plug B, and is on at the other wires of plugs A and B depending what speed is on.

    So I have power where I am supposed to have power. I'm guessing a ground issue? The tab I jumped with a ground for teh bench test gets power while in the truck, not sure what is going on there. I always thought the motors grounded via the strap on the lower left screw.

    The wiring is in good shape, not butchered, and it came with the motor. I have is hooked into my 63 correctly, according to my FSM.

    Any thoughts?
    Thomas Russell
    1987 Cherokee Laredo 2-Door 4.0/AW4
    1971 Gladiator
    J2000 Platform-Stake Dump 350/T18

    1970 Gladiator J3000 3407Z Camper Truck 350/T18
    1968 Wagoneer Custom 327/TH400

  • Gambler68
    Rabble Rouser
    • Feb 29, 2004
    • 14082

    #2
    Hook it back up and run a separate ground wire and see if that works.

    thanks for describing the wiring, I needed that to hook mine back up
    1979 Chero S "Sundog" 1979 Chero S "Hammer"
    1968 327 J3000 1978 J10SWB
    The Edge... there is no honest way to explain it because the only people who really know where it is are the ones who have gone over.
    Hunter S. Thompson .

    Comment

    • KaiserMan
      I got the Willys....
      • Jun 21, 2005
      • 8702

      #3
      The problem is, I'm not sure where to ground it with it installed in the truck.

      As I said, the spot I grounded for the bench test get power when installed in the truck. I'm going to run the test light on teh motor in the Gladiator and see if I get the same results.
      Thomas Russell
      1987 Cherokee Laredo 2-Door 4.0/AW4
      1971 Gladiator
      J2000 Platform-Stake Dump 350/T18

      1970 Gladiator J3000 3407Z Camper Truck 350/T18
      1968 Wagoneer Custom 327/TH400

      Comment

      • KaiserMan
        I got the Willys....
        • Jun 21, 2005
        • 8702

        #4
        Okay, easy fix. Check the motor on the 71 and blue never gets power. Pulled my switch back out and found that when putting the wires back in teh plug ( I took them out and cleaned the terminals) I had switched the blue for the yellow wire. So I was powering my ground.
        Thomas Russell
        1987 Cherokee Laredo 2-Door 4.0/AW4
        1971 Gladiator
        J2000 Platform-Stake Dump 350/T18

        1970 Gladiator J3000 3407Z Camper Truck 350/T18
        1968 Wagoneer Custom 327/TH400

        Comment

        • Gambler68
          Rabble Rouser
          • Feb 29, 2004
          • 14082

          #5
          Originally posted by KaiserMan
          Okay, easy fix. Check the motor on the 71 and blue never gets power. Pulled my switch back out and found that when putting the wires back in teh plug ( I took them out and cleaned the terminals) I had switched the blue for the yellow wire. So I was powering my ground.
          There ya go! You mind posting a pic of the wires as installed?
          1979 Chero S "Sundog" 1979 Chero S "Hammer"
          1968 327 J3000 1978 J10SWB
          The Edge... there is no honest way to explain it because the only people who really know where it is are the ones who have gone over.
          Hunter S. Thompson .

          Comment

          • KaiserMan
            I got the Willys....
            • Jun 21, 2005
            • 8702

            #6
            I'll snap some pics right now. Holy heck, I'll snap you those pics of teh cab corners while I'm at it!
            Thomas Russell
            1987 Cherokee Laredo 2-Door 4.0/AW4
            1971 Gladiator
            J2000 Platform-Stake Dump 350/T18

            1970 Gladiator J3000 3407Z Camper Truck 350/T18
            1968 Wagoneer Custom 327/TH400

            Comment

            • Gambler68
              Rabble Rouser
              • Feb 29, 2004
              • 14082

              #7
              Originally posted by KaiserMan
              I'll snap some pics right now. Holy heck, I'll snap you those pics of teh cab corners while I'm at it!
              lol good. it's still there.
              1979 Chero S "Sundog" 1979 Chero S "Hammer"
              1968 327 J3000 1978 J10SWB
              The Edge... there is no honest way to explain it because the only people who really know where it is are the ones who have gone over.
              Hunter S. Thompson .

              Comment

              • KaiserMan
                I got the Willys....
                • Jun 21, 2005
                • 8702

                #8
                Thomas Russell
                1987 Cherokee Laredo 2-Door 4.0/AW4
                1971 Gladiator
                J2000 Platform-Stake Dump 350/T18

                1970 Gladiator J3000 3407Z Camper Truck 350/T18
                1968 Wagoneer Custom 327/TH400

                Comment

                • Gambler68
                  Rabble Rouser
                  • Feb 29, 2004
                  • 14082

                  #9
                  excellent, ty
                  1979 Chero S "Sundog" 1979 Chero S "Hammer"
                  1968 327 J3000 1978 J10SWB
                  The Edge... there is no honest way to explain it because the only people who really know where it is are the ones who have gone over.
                  Hunter S. Thompson .

                  Comment

                  • blakeusa
                    350 Buick
                    • Jul 21, 2005
                    • 816

                    #10
                    Need help on Switch Wiring for this motor.

                    I got the motor wiring, but not clear on the switch.

                    Switch has 3 terminals - one off to the side and two close together.

                    Which is power, low speed/high speed and ground.

                    I think this is correct--



                    Also any one ever install a delay in this circuit?
                    Last edited by blakeusa; 12-15-2010, 01:04 AM.
                    1971 J4000 Gladiator w/AMC 401 Restoration Project

                    Comment

                    • blakeusa
                      350 Buick
                      • Jul 21, 2005
                      • 816

                      #11
                      Here is my new diagram of how I have it hooked up. I believe this is correct but just getting a big click when I engage the switch. Some have a blue or green wire... the colors don't matter as much as long as the circuit matches.

                      Will try testing by jumping switch.

                      1971 J4000 Gladiator w/AMC 401 Restoration Project

                      Comment

                      • blakeusa
                        350 Buick
                        • Jul 21, 2005
                        • 816

                        #12
                        Wiper Switch 2/ Motor Connections

                        Still can't figure which wire on the switch goes to each terminal on the motor. I have looked at the TSM, Service Manual and wiring diagram. It only shows it's connected to a switch.

                        Please note that I do suffer from mild brain damage (for real), but no more than the average person after "say 6-12 beers". It also helps be tolerate my anti-jeep wife.

                        Lets call the terminals clockwise 1,2 & three.

                        Switch



                        Motor
                        1971 J4000 Gladiator w/AMC 401 Restoration Project

                        Comment

                        • blakeusa
                          350 Buick
                          • Jul 21, 2005
                          • 816

                          #13
                          You can see that over time I begin to answer my own posts...

                          OK the reason I have been going crazy with this is that I had a Jeep OEM NOS motor and washer. Since it was new I never tested it. So guess what. I did bench test it and it did not work.

                          Took it apart, all shiny and new on the outside - RUSTY and seized on the inside.

                          I guess they should have told me it was New Old Crap when I bought it. Or maybe the parts department was located down next to Sponge Bob.

                          I will go back to fixing all my old stuff that I know can work.
                          1971 J4000 Gladiator w/AMC 401 Restoration Project

                          Comment

                          • fulsizjeep
                            Señor Jackhead
                            • Aug 21, 2002
                            • 22496

                            #14
                            Bummer on the NOC part.

                            One of the AZ guys bought 2 NOS QuadraTrac tcases when they were available. He put one in his Cherokee and recently found water in the 2nd one and showed it to me. It was shipped to him this way and he did not know until he tried to take it apart and the rear shaft would not let go of the diff. The limited slip diff was all rusty crusty inside. That was a $700 bummer.
                            Flint
                            Ran when parked.
                            http://jubileejeeps.org/quadratrac
                            88 GW, 401/727/208, 5" lift, D44s/4.10s/locked up, 35s with a few Evil Twin & TT's Fabworks mods
                            76 401 Wag, 77 401 Wag, 77 401 J20
                            http://eviltwinfab.com http://www.ttsfabworks.com

                            Comment

                            • KaiserMan
                              I got the Willys....
                              • Jun 21, 2005
                              • 8702

                              #15
                              Sorry I never noticed your posts on here. Let me know if you still need to know which wire go where, I'll run out and look at my 63.
                              Thomas Russell
                              1987 Cherokee Laredo 2-Door 4.0/AW4
                              1971 Gladiator
                              J2000 Platform-Stake Dump 350/T18

                              1970 Gladiator J3000 3407Z Camper Truck 350/T18
                              1968 Wagoneer Custom 327/TH400

                              Comment

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