Okay, after reading the replies here, I bought a tach for my '05 TBA and I want to install it. Under the dash I have three sets of wires ending in plugs: 1) orange wire, grey wire; 2) red wire, green with thin red stripe wire; 3) purple wire, brown wire, red with thin blue stripe wire.
The tach ends with 4 loose wires... I am guessing that I want the plug with 3 wires, but what am I doing with the 4th loose wire from the tach? Does anybody have a wiring diagram that explains what I am looking at and what I want?
