Hey everyone! I bought a tachometer at a swap meet recently. Its a half sweep, no name or ID tach that has five wires coming out the back. Red Lt. Green Black Two Yellows Anyone care to guess what each wire goes to? Spike
Have you taken the back off? Usually the Red=Power, Green=Tach Signal, Black=Ground, and then there is usually a wire for a light, but with yours having two yellows, it sounds like it may require a sending unit. If you could post a picture, that would help.
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