Thread: PCM Wiring Harness & Fuse Box Wiring Size

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  1. #1 PCM Wiring Harness & Fuse Box Wiring Size 
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    Hello everyone, new to the forums, but have been interested in these cars for a long time. I'm pretty excited because I'm getting a 98 grand prix gtp from one of my old friends that we use to cruise around in my first couple of college years after high school. I'm getting it for a good price because some rats got into the wiring.

    My question is what size is the wiring going into the PCM and the fuse box? It looks to be the same size for both, just some of the ends near the PCM and fuse box are chewed off. Also, where can I get this type of wiring?

    Would it be better just to get new harnesses? They appear to be hard to find and costly so I'm guessing no. Thank you in advance.
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  2. #2 Re: PCM Wiring Harness & Fuse Box Wiring Size 
    GTX Level Member QUICKSILVER462's Avatar
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    Junk yard/salvage yard would be your best bet to find the wiring you need, should not be to hard to find a complete harness to use or splice in place, try MORAD on e-bay. Be cautious of other wires chewed threw throught the car, not only that, likely the rats feces spread throught the car will smell and carry diseases.
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  3. #3 Re: PCM Wiring Harness & Fuse Box Wiring Size 
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    Quote Originally Posted by QUICKSILVER462 View Post
    Junk yard/salvage yard would be your best bet to find the wiring you need, should not be to hard to find a complete harness to use or splice in place, try MORAD on e-bay. Be cautious of other wires chewed threw throught the car, not only that, likely the rats feces spread throught the car will smell and carry diseases.
    My local junkyard happens to have a 1998 Grand Prix GT. Would the wiring harness off that work or is it different for the GTP?
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  4. #4 Re: PCM Wiring Harness & Fuse Box Wiring Size 
    GTX Level Member QUICKSILVER462's Avatar
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    If it is the same year, it dont get much better than that, the colors on the wires should be the same.
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  5. #5 Re: PCM Wiring Harness & Fuse Box Wiring Size 
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    Quote Originally Posted by QUICKSILVER462 View Post
    If it is the same year, it dont get much better than that, the colors on the wires should be the same.
    Are any of the wires different due to anything relating to the supercharger or exactly the same if it is the same year?
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  6. #6 Re: PCM Wiring Harness & Fuse Box Wiring Size 
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    Get a HAYNES manual as they have a good wiring diagrams in the back pages, or search on the internet. Best bet is to make a list of what you need and get it of the JY car is possible. Repair the wires ONE AT A TIME so you dont get lost.
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