Just got my hands on 1966 console tachometer & sending unit.It has three wires. I read somewhere that 1967 verison had 4 wires & no sending unit. need help wiring..... thanks
The 67 Charger does not have a sending unit for the tach, while the 66 has. In your case my guess is that you have the following 3 wires: 1. +12V feed 2. the negative side of the ignition coil 3. the instrument light The case is grounded via the console Good luck, Martin
