A Starter Relay Solenoid is used in the wiring harness to control the flow of current to the starter motor. The solenoid is located near the starter motor and is connected to the battery, the starter motor, and the ignition switch. When the ignition switch is turned on, it sends a signal to the solenoid, which activates it.Attributes: • Provides feedback to the ignition system• Protects the electrical system from overloadApplications:A Starter Relay Solenoid is used to allow current to flow to the starter motor to prevent the starter motor from being activated accidentally, which could damage the engine or the starter motor.