the old circuit board had 3 wires for gas gauge that were cut not used also a white resister on 2 terminals does the new circuit board need it I havent installed the new wire harness or board yet realey need gas gauge dont want to ruin new board also can i install factory tacometer wire to H.E.I. ignition Thank U for in advance for helping gary C
Welcome to CHR I don't have a wireing diagram for that car but I'm sure sombody will be along with an answer or opinion :D
I can only say that I have a normal tach in my 69 GTO wired to an HEI distributor and it works great.
The gas gauge needs 3 wires hooked to it. One to Sending unit. Another hooked to ground and the 3rd hooked to Ignition to work.