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  1. #1

    Default 1986 dash panel circuit board

    I have a 1986 Mustang GT w/302 H.O. Engine, 5 speed T-5. All factory original. I had to replace the speedo cable, therefore I had to remove the factory dash panel. The printed plastic printed circuit board is toast and unusable. I had an old one sitting around, so I replaced the original with the one laying around. It fit perfect and had the exact same Ford part #’s. When I got it together, all the gauges worked, except for the oil pressure gauge. Now a couple of days later, my tach only wants to work intermittently.

    I found a possible new replacement circuit board at NPD, and all the Ford part #’s match—-except my circuit board has an “AA” at the end, but the one at NPD only has “A” at the end. Will this make a difference?

    NPD part # is: M-10K843-3A

    My circuit board—“E4ZF-10C956-AA”
    NPD circuit board— “E4ZF-10C956-A”

  2. #2
    FEP Senior Member tbirdman's Avatar
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    Default

    The E4ZF 10C956-A is the engineering number. The actual Ford part number for the circuit board is E4ZZ 10K843-B. That engineering number, with the single "A" at the end is listed in the parts list, though, so you should be good to go.

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    If they take my stapler, then I'll set the building on fire...

    85 Mustang GT

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