OK this is not s G-body but a Camaro,I have a 1974 Camaro Z28 and have the instrument cluster removed and need to know which wire is for the fuel sending switch so I can hook up my Autometer fuel gauge,there are plugs for the headlights,wipers,amps and the main plug for the circuit board any idea where this wire may be are do I have to run the wire al the way back to the tank?THANKS