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Thread: Wiring Harness Terminals

  1. #21
    That Limey Bastard
    Kai's Avatar
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    Default Re: Wiring Harness Terminals

    Yep, i vote for a tech section sticky as well, these sorts of parts will become more necessary as Toyota discontinues more and more of their old parts.

    Incidentally - figgie, any idea what awg or swg gauge wire is used in the harness, and where can you source it?


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  2. #22
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    Default Re: Wiring Harness Terminals

    Kai,

    the OEM harness?

    They are using lots of 18-16 guage.

    16 guage for the higher amperage runs.

    18 for the normal.

    have to check what wire is called as it is PVC based. That much I remember.
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  3. #23
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    Default Re: Wiring Harness Terminals

    Everything you ever wanted to know (and then some) about the wiring and color coding scheme Toyota uses is in the Body Electrical Manual. Publication# STI1018E. There's so much there I'd need specifics in order to answer questions but figgie is correct in that most of it is insulated with one form or another of polyvinyl chloride. And not to be picky but the gauge is standard metric, not AWG. No surprise since the "A" in AWG stands for, well, you know...

  4. #24
    The quiet one
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    Default Re: Wiring Harness Terminals

    Good find!

    Any chance you could point me to the connector hoods and terminals for the 7MGTE igniter? I need the igniter side, not the engine harness side.

  5. #25
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    Default Re: Wiring Harness Terminals

    probably easiest to source the connector from a parts car/junk yard. The required terminals are those offerred on the eastern beaver page (sealed MT). These are the exact terminals used in the majority of plugs on our wiring harness.

    If you wanted, you could just use two of the 4-pin connectors and de-pin the harness side plugs and pop the pins into the new connector.

  6. #26
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    Default Re: Wiring Harness Terminals

    Hmm, actually you have a good point that I should have thought of. I need only the terminals and can reuse the connector from another igniter. I want this mod to be plug compatible with a stock igniter so if it fails I can plug a spare igniter in and change the ignition back to multiplexed. New terminals prevents destroying a working igniter and introducing a lot of splices.

    Thanks.

  7. #27
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    Default Re: Wiring Harness Terminals

    Quote Originally Posted by bfr1992t View Post
    Hmm, actually you have a good point that I should have thought of. I need only the terminals and can reuse the connector from another igniter. I want this mod to be plug compatible with a stock igniter so if it fails I can plug a spare igniter in and change the ignition back to multiplexed. New terminals prevents destroying a working igniter and introducing a lot of splices.

    Thanks.
    no problem...i did the same thing with my fuel injectors and coil pack wiring to avoid hacking up a brand new harness so I understand where you are coming from.

  8. #28
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    Default Re: Wiring Harness Terminals

    Quote Originally Posted by adampecush View Post
    the connectors themselves are not interchangable, but the pins are exactly the same. You can de-pin and install a new plug pretty easily. I did this for my fuel injectors to avoid chopping up my harness.

    edit: I've got 3 old wiring harnesses kicking around and could probably de-pin one of the connectors you are looking for and send it to you...pm me if you want.
    So these arent the same as the factory plugs? I was hoping the 4 pin was identical to the factory cps and coil pack plugs. So does Sumitoto still make the plugs from our harness at all, or just similar ones?

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  9. #29
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    Default Re: Wiring Harness Terminals

    Quote Originally Posted by GC89 View Post
    So these arent the same as the factory plugs? I was hoping the 4 pin was identical to the factory cps and coil pack plugs. So does Sumitoto still make the plugs from our harness at all, or just similar ones?
    correct, they are not interchangable. The original series connectors are discontinued, but they likely still make compatible connectors. Good luck finding them one-off though. Sumitomo's site really only caters to the OEMs. Dealers may still carry them though.

  10. #30
    That Limey Bastard
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    Default Re: Wiring Harness Terminals

    Just to update this thread with the NEW link;

    http://easternbeaver.com/Main/Elec__...-MT/sm-mt.html


    1990 Toyota Supra Mk3, 2954cc 7M-GTE, Lexus AFM, 550cc RC Injectors,
    FSE 255lph Fuel Pump, 7M-GE FPR, Turbo Technics Stage 1 Hybrid CT-26,
    HKS LET-16 Exhaust System (Elbow Back, DeCatted), Bailey Motorsports DV30 BOV,
    Samco Hose Set, Custom Intercooler, 10-row Mocal Oil Cooler,
    HSD Coilovers, 16" MkIV 5-spoke Alloys w/ Toyo T1-R's

    "DreamerTheresa: If i had a penis, it would have just crawled into my stomach out of fear."

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