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Thread: 1998 M1078 A0 Wiring nightmare?

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    Colonel DREDnot's Avatar
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    Default 1998 M1078 A0 Wiring nightmare?

    My buddy has this M1078.

    123_1(2)a.jpg

    20190503_134048.jpg

    Hes wanting my help to try to fix this.

    Looking for your thoughts on the severity of the damage...whats missing...reasoning behind this...Is there a down and dirty few circuits to get it running to move it...etc.

    Im going to start by downloading the TMs.

    20190503_133723.jpg

    20190503_133727.jpg

    20190503_133951.jpg

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    He has this stuff to try to fix it...

    20190503_134643.jpg

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    20190503_134701.jpg
    Last edited by DREDnot; 05-04-2019 at 16:27.
    1998 M1078A0
    1993 M998
    1986 M1009(sold)
    1992 M101CDN(sold)
    "Non Vi Sed, Arte"

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    4 Star General NDT's Avatar
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    Ouch it got the super axe whacker treatment. I say forget trying to sort out the whacked harnesses, get take outs FROM A 1998 to 2000 model truck. He's missing all the transmission control keypad and brainbox, which is all integrated in the harnesses. You could easily get the engine cranked, but the Allison will be dead as a doornail.

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    4 Star General coachgeo's Avatar
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    Buy a second scrapper truck AFTER we help you determine if yours had a wtech II or III trany controller so you can swap the next purchase's parts

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    4 Star General NDT's Avatar
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    1998 were all WTEC 3. Edit: Or so I thought, see next post.
    Last edited by NDT; 05-03-2019 at 20:38.

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    Quote Originally Posted by NDT View Post
    1998 were all WTEC 3.
    MY 98 1079 is a WTEC II.

    What the others said! The trans controller and VIM are missing, that truck isn’t going anywhere unless towed/trailered. Your friend bought an ass pocket full of work...
    Buy another one and make this your parts truck?

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    He has a trans control box. Waiting for pics to ID it.
    1998 M1078A0
    1993 M998
    1986 M1009(sold)
    1992 M101CDN(sold)
    "Non Vi Sed, Arte"

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    And the transmission Vehicle Interface Module? You can see where its harness was cutoff under the passenger dash in the top right corner of pic 4...

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    DREDnot (05-03-2019)

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    Colonel DREDnot's Avatar
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    Quote Originally Posted by Ronmar View Post
    MY 98 1079 is a WTEC II.
    Your friend bought an ass pocket full of work..
    Yeah, he realizes that now. He says there was a pic from the sale that showed the word "running" in grease pencil on the cab front. When he got it, it said "not running". They conveniently cropped that out of the pic.

    The rest of the truck seemed complete
    1998 M1078A0
    1993 M998
    1986 M1009(sold)
    1992 M101CDN(sold)
    "Non Vi Sed, Arte"

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    4 Star General NDT's Avatar
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    Quite a few parts trucks out there. If everything else on the truck looks good, I would not buy an entire truck to get harnesses that will fit in a large flat rate box (maybe?). Just keep in mind that it's always a possibility that this truck was brutalized because there was something hideously wrong with the engine or transmission.

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    4 Star General coachgeo's Avatar
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    Check her out close..... could well be the reason they pulled so many parts off the truck is cause something else is potentially massively knackered thus why it was stripped of parts to replace weak points on other trucks.
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    wheelspinner (05-04-2019)

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