1955-1972 WIRING A GEAR REDUCTION STARTER & ELECTRONIC IGNITION SYSTEM

1955-1972 WIRING A GEAR REDUCTION STARTER & ELECTRONIC IGNITION SYSTEM


When installing a late model or a gear reduction starter on a classic, the solenoid may only have the large stud for the battery cable and ignition switch and the smaller terminal for the "starter" wire. This creates a problem on 1957 cars or on 1955-56 cars that have updated wiring. Without connecting a starter wire to the ignition coil, the coil will not have power when the engine is turning over and the engine will not start.

On a 1955-56 the original "plunger " style starter solenoid has two terminals while the 1957-up has three. The large terminal is for the positive battery cable and the black wire that runs to the ignition switch center position. The smaller terminal closest to the engine block is the "starter terminal". The other smaller terminal (1957-up only) farthest from engine block is the "starter terminal". The "starter terminal" has a violet wire which is the wire that leads to the ignition switch "start" position. The "starter terminal" on a 1957-up has a green wire that powers the ignition coil while the starter is turning the engine over. The coil on original 1955-56 cars receives power from the ignition switch and not directly from the starter. Keep in mind many 1955-56 cars have been updated with 1957-up style solenoids and wiring.

On the back of the ignition switch on a 1955-57 there is one terminal marked "SOL". This connects to the starter terminal on the starter solenoid which engages the starter and turns the engine over. There is another terminal marked "IGN1" on the 1955-56 which has a brown wire. On the 1957's there is a terminal marked "SOL'' which has a tan wire which supp lies power to the ignition coil only when the engine is running.

To supply power to the ignition coil while the engine is running and while the engine is turning over without using a starter wire, a jumper wire must be made between the "SOL'' wire (violet) and the "IGN 1" (brown wire 1955-56) or "IGN" (tan wire 1957). Using a 3M Scotch Lock or a short piece of 14-gauge wire, connect the two wires together. This will supply the ignition coil with good solid 12-volts while the engine is running as well as when the engine is being started.

Parts List
1955-1957 Chevy Side Engine Mounts Small Block V8 to mount new style engine
Remote Power Steering Pump