If you have a solenoid with 4 terminals, 2 large, 2 small, refer back to my post at the beginning. the small post S is for start. this triggers the solenoid to connect both big cables and engage the starter. The other small terminal I is ignition. this terminal is only hot when the solenoid is in starter mode, all connected. Yes, The I terminal goes to the coil, same as Ford products after 1956