Continuing saga: What I replaced twice so far is what they call a Insturment Voltage Reducer. Last time I replaced, Ford gave me the wrong part number, they look alike. PN: GR-513, D1AZ 10804-A is for a 1971-1973 Ford not an 86 Mustang gt. It did plug in and worked for awhile. I need to determine what is the correct part number for the 86 GT? The IVR reduces from 12volts to 5volts where the guages appear to be happiest. What would be ideal would be an adjustable IVR or Mechaical Guages. |