-original 1/2 x 14 N.P.T.F.-, with factory gauges (correct resistance and connection, produces accurate gauge... see more-original 1/2 x 14 N.P.T.F.-, with factory gauges (correct resistance and connection, produces accurate gauge display)
with Over The Counter Transistor Ignition System (plastic connector ONLY, installs onto wires coming out... see morewith Over The Counter Transistor Ignition System (plastic connector ONLY, installs onto wires coming out of distributor from the magnetic pick-up)