#6067, "RE: how to hook up a tach" In response to In response to 0
the white wire goes to a 12V lighting wire, the red wire goes to a 12V power wire, the black wire is the ground wire and the green wire goes to the tach signal wire off the ECU which was burned when my car caught on fire and i cant remember which wire it was so i need this info too so i can hook it back up when i get my car back.
