Does anyone know for fact where to get a tach signal for a shift light in the 05 Mustang. I've talked with MSD, AutoMeter and quite a few performance shops and no one knows.
You need to tap the negative side of one of the coil packs. If you are trying to hook up a standard type shift light, you need a tach adapter for the Ford COP.
Yea, already looked for the line going to the EEC. Found out just what he's saying. I have a AutoMeter tach adapter. I wonder if I need to get the Ford tach adapter? Have you wired one of these up? I've tried wiring to the coil pack. I could only get the light on at crank up, but not at the rpm's specified by the pill.