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  • J type OD wireing

    Hello all,
    Wondering if anyone has a picture of the wire hook ups for the J type OD? I'm having a little trouble following the schematic and just thought it would be easier if I could look at an actual picture with the wires hooked up. Thanks, John Mack

  • #2
    Where specifically are you looking for. It connects in several places.

    Under the dash, the switch connects the yellow green wire to a quad bullet connector in the green circuit which should be near the steering column. The black wire on the switch connects via a yellow/green wire which heads to the transmission tunnel. There is typically a single style bullet connector at the transmission tunnel wiring grommet, where it connects to the lower yellow/green wire.

    Once in the tunnel, the yellow green connects to the interlock switch. From the second terminal of the switch is a yellow/purple wire all the way to the solenoid. Second terminal of the solenoid should be a ground. I suggest making the ground wire very clean and very secure.

    Click image for larger version

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    Attached Files
    Last edited by oppositelocksmith; 05-06-2019, 04:46 PM.
    1973 TR6 – BRG with beige interior, custom LED lighting
    Hardtop, OD, Rollbar, 15”Koenigs
    Bored, balanced and polished motor with Kastner/TSI S2 Cam
    Header, custom exhaust, custom alternator, e-fan
    Lowered, poly suspension, Konis and rear anti roll-bar
    www.coventrysfinest.blogspot.com

    Comment


    • #3
      Thanks for the reply, here is what I have so far, I have the Y/g and Black wire from the OD column switch, I have continuity at those two ends so my switch is good. Next I attempted to locate the quad green bullet connector, no luck, all I see under the dash are two quad connectors and a single bullet, one quad is G/w G/w into G/w, the other quad is G/o G/o into G/r G/n and a single bullet G/n into G/n. My tracer colors may be off as you may well know lying on your back under the dash with pen light between your teeth gets old quick. My harness is new so I know it hasn't been "molested", as far as a solid green quad connector nothing. Thanks for your input, John Mack

      Comment


      • #4
        Is the OD a new installation? I know when I upgraded from the std. box to the J-Type, I overlooked the fact that the OD required 2 different wiring harnesses to complete the stock installation and I had neglected to order one of them. Somewhere I've got a handwritten, simplified schematic of just the OD wiring. I'll see if I can find it.
        CF1634U+O Pimento/Chestnut
        2nd owner, since 1975
        Now in Fair Oaks, CA

        Comment


        • #5
          No, its an original OD car, I was having trouble with the solenoid a while back, and didn't bother to hook up the OD harness to the new harness when I replaced it, I finally got a new solenoid along with new OD wire harness, after chasing the wires around I found that two of my "lock out" switches were bad, new switches arrived today. Is there a different main wire harness for OD cars vs non OD cars ? I didn't notice when ordering the new main harness or simply over looked it. Thanks for your help, and any drawings would be great! John Mack

          Comment


          • #6
            John, what year car is it? 73 and later have the green wire with a bullet on the end and the quad bullet connector near the column. However a quick look at the wiring diagrams for earlier cars leads me to believe they did not.
            1973 TR6 – BRG with beige interior, custom LED lighting
            Hardtop, OD, Rollbar, 15”Koenigs
            Bored, balanced and polished motor with Kastner/TSI S2 Cam
            Header, custom exhaust, custom alternator, e-fan
            Lowered, poly suspension, Konis and rear anti roll-bar
            www.coventrysfinest.blogspot.com

            Comment


            • #7
              Sorry, should of included that info, it's a '74. I spent a good amount of time looking for that connector, seats out and vent ducting removed on drivers side, I just didn't see it. Maybe I'll need to drop the steering column to see if it's tucked up in there. Thanks, John Mack

              Comment


              • #8
                I've annotated the diagram to show where the bullet connectors should be. Keep in mind the double connector above the gearbox cover on your car will currently probably be a single connector.

                I'm adding another illustration so we can use the same terminology for the bullets.


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                Click image for larger version  Name:	Bullet&Sleeve.jpg Views:	1 Size:	135.0 KB ID:	522442

                Last edited by RatRidgeRoadster; 05-08-2019, 08:16 PM.
                R3
                Jim Herter Copperas Cove, TX
                Original Owner ֍ 1970 TR6 ֎ CC 50990 LO
                VDU 506H

                Comment


                • oppositelocksmith
                  oppositelocksmith commented
                  Editing a comment
                  Thanks for adding the pics and terminology. Question- the green wire coming back from above the gearbox cover in my car is (I believe) wrapped into the harness. Original OD car. Do all 73 and later cars have that wire included that way?

              • #9
                I probably should have mentioned the green wire between the double bullet/sleeve above the gearbox cover and the single under the steering column will be a new wire.

                EDIT: Actually, the green wire would be in this harness:

                Click image for larger version

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                Last edited by RatRidgeRoadster; 05-09-2019, 01:18 AM.
                R3
                Jim Herter Copperas Cove, TX
                Original Owner ֍ 1970 TR6 ֎ CC 50990 LO
                VDU 506H

                Comment


                • #10
                  Thanks a bunch for the additional info, I think that should do it, I'll be able to get at it tomorrow and I'll get back to you. Thanks again. John Mack

                  Comment


                  • #11
                    Originally posted by JohnMack View Post
                    No, its an original OD car, I was having trouble with the solenoid a while back, and didn't bother to hook up the OD harness to the new harness when I replaced it, I finally got a new solenoid along with new OD wire harness, after chasing the wires around I found that two of my "lock out" switches were bad, new switches arrived today. Is there a different main wire harness for OD cars vs non OD cars ? I didn't notice when ordering the new main harness or simply over looked it. Thanks for your help, and any drawings would be great! John Mack
                    FYI the lockout switches are easily rebuilt. Just pry ‘em open where they are peened over, and the clean up the contacts with a pencil eraser and a quality contact cleaner. Switch contacts of this type shouldn’t be sanded to clean them as that removes the contact enhancing coating that’s part of the copper plating process. But the eraser does the trick. Load the various guts back into the switch, peen them back together and check them with a ohm meter or continuity checker. Not a big deal...
                    1974 TR-6 Logic Overdrive

                    Comment


                    • #12
                      oppositelocksmith commented
                      Today, 11:27 PM


                      Thanks for adding the pics and terminology. Question- the green wire coming back from above the gearbox cover in my car is (I believe) wrapped into the harness. Original OD car. Do all 73 and later cars have that wire included that way?
                      I misspoke about the green wire. See my edit of post #9 above. The green wire going to the bullet (single or double) above the gear box cover, of course will be wrapped into the harness. I guess it's possible the factory wrapped the small harness on to the main harness, but that was not the case for a similar small harness for my A Type .
                      R3
                      Jim Herter Copperas Cove, TX
                      Original Owner ֍ 1970 TR6 ֎ CC 50990 LO
                      VDU 506H

                      Comment


                      • #13
                        Hello all, just wanted to say thanks for all the help and suggestions, dropped the drivers seat in with out any of the carpeting back in place, and took her for a test ride. The OD worked great, just as it should in 3rd and 4th gear with the flick of the OD lever. John Mack.

                        Comment

                        J type OD wireing

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