Denparts sale 12 Volt Car and Truck Solenoids & Relays. Car and Truck relays are for use in 12 volt electrical systems. Car and Truck Solenoids & Relays are used when you need to switch higher currents than a switch can handle, or when you want to isolate an electrical circuit.

An idle Car and Truck starter solenoid can receive a large electric current from the car battery and a small electric current from the ignition switch.This causes the Car and Truck starter solenoid to close a pair of heavy contacts, thus relaying a large electric current through the Car and Truck starter motor, which in turn sets the engine in motion. Buy online Denparts New aftermarket car and truck Solenoids & Relays. Shipping from Canada.