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  1. #1
    Join Date
    Jul 2020
    Posts
    108

    Default Gravity III wiring diagram?

    Before I call Supra I figured I would ask. My wiring harness for the ballast switch panel had the green death and wires were crumbling at the 15 pin connector. I ordered a new plug kit and re pinned it. EXACTLY AS IT WAS. My fill pump won’t power up. My front empty pump turns on, and when I hit the left empty switch the fill pump kicks on. I think something is crossed, broken or there is a deeper issue. Looking at the old plugs (I cut the wires back an inch, one at a time and put them in the new socket with new pins) they match up by color from the main harness to the short harness to the switches. I’d love to see a diagram of this, maybe color coded even? Hopefully someone can help. If I end up calling Supra I’ll post my findings here to hopefully help someone else in the future.


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  2. #2
    Join Date
    Jun 2012
    Location
    Knoxville TN
    Posts
    1,415

    Default

    Not sure I've seen one of those floating around over the years.
    2018 Supra SL400

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