Automobile ignition switch circuit

Start the relay

A circuit consisting of a starting switch and a starting protection circuit.

The low-temperature preheating starting device and its control circuit can also be included in this circuit.

It's very simple for me. The key power supply goes to the starting relay and then to the starter (motor).

Connection: the key power supply (supplied by the switch) is connected to the control line of the relay. The relay itself has a normally open power supply (battery positive electrode), and the output power supply is connected to the motor key line. Carefully lock the relay in the ground position.