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Thread: ma70 (late model) 1jz conversion wiring woes (already searched forums)

  1. #1
    Mad Man Grease Monkey 77GZE's Avatar
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    Default ma70 (late model) 1jz conversion wiring woes (already searched forums)

    Hey guys, im having a couple of second thoughts of the way i have gone about my conversion and wondering if anyone can help.
    I bought the entire half cut of the 1jz and stripped every harness from it ( as i wanted to change from the ma70 digital dash and ect to the analog one of hte jza70)
    I thought it may be easier to just take the entire harness from the jza70 and throw it in the ma70, but now finding things like the ABS and the electrics from the doors arent the same on the jza70 harness...
    What is harder in all respect, to splice the jza70 harness into the ma70 harness, or to try to re-pin the ma70 plugs for the doors and other electrics, and split the abs from the ma70 harness and try to wire it in. Any input would be much appriciated on my choice of route so far, as i cant find any info on it at all...everyone seems to join their original internal harness...
    any information at all.
    Thanks
    Steve

  2. #2
    Triptek Enhanced Backyard Mechanic triptek's Avatar
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    Default Re: ma70 (late model) 1jz conversion wiring woes (already searched forums)

    I'd say it would be easier to repin the door plugs instead of trying to get the analog dash working on the ma70 body harness.

    I thought most jza70's didn't come with abs, or was it only the type R's that didn't have it.
    1990 SW20 MR2 turbo Gen III 3S-GTE conversion, 3" exhaust = 264.9rwhp
    1985 JZA61 2JZ-GTE + TO4Z = 442.1rwhp @ 18psi
    1991 JZA70 Limited 2JZ-GTE vvti GTX30/76r
    1994 GZX90 Mark II 1GZ-FE V12
    1980 MA45 Undergoing Restoration

  3. #3
    Mad Man Grease Monkey 77GZE's Avatar
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    Default Re: ma70 (late model) 1jz conversion wiring woes (already searched forums)

    Yeh the jza70 half cut didnt have it my ma70 does, whats the consequences of using the car without hte abs wiring hooked up will the brakes stil work correctly

  4. #4
    Toymods Pimp Chief Engine Builder Norbie's Avatar
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    Default Re: ma70 (late model) 1jz conversion wiring woes (already searched forums)

    1. Wire up 1JZ as per every other MA70 1JZ conversion
    2. Re-pin MA70 dash loom to match JZA70 dash

    Those two steps sound a whole lot easier than re-wiring the whole damn car... why wouldn't you do it that way?

  5. #5
    Mad Man Grease Monkey 77GZE's Avatar
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    Default Re: ma70 (late model) 1jz conversion wiring woes (already searched forums)

    Yeh thanks norb i was just looking for some advice, my idea didnt go as easy as i originally hoped
    But i will sort it, the dash wiring cant be that hard can it...

  6. #6
    JZ Powered Too Much Toyota EldarO's Avatar
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    Default Re: ma70 (late model) 1jz conversion wiring woes (already searched forums)

    Quote Originally Posted by 77GZE
    Yeh the jza70 half cut didnt have it my ma70 does, whats the consequences of using the car without hte abs wiring hooked up will the brakes stil work correctly
    im running abs system without it being wired up, its working fine.

    use your common sense, does it make sense for the entire brake system to stop working if the abs fails!?

    Elmo.

  7. #7
    KE25 legendary Backyard Mechanic Robbo's Avatar
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    Default Re: ma70 (late model) 1jz conversion wiring woes (already searched forums)

    Quote Originally Posted by triptek
    I thought most jza70's didn't come with abs, or was it only the type R's that didn't have it.
    i had a Turbo-R front cut (me being importer) that had ABS,its been my 3rd front cut Turbo-R thats had Abs,i only buy turbo-r cars for chop...
    !!! BAN LOW PERFORMANCE DRIVERS NOT HIGH PERFORMANCE CARS !!!

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