Feature:Increase the current of the starter to help start the starterInstallation method: two feet are connected to the iron, the upper screw is connected to the electric door lock. The two columns are connected to the power supply.The function of the starter relay is to have a large current when starting the motor. The key is used to control the starter motor.When the key is turned on, if a large current flows from the key to the starter, the key must be made large and cumbersome.The starter relay is controlled by the keyWhen the key is turned on, the suction coil in the starting relay is energized to generate suction, and the starting circuit contacts are attracted.The current to the starter motor is cut off and the motor stops working.Specification:Condition:Brand newMaterial: aluminium Package weight: Approx330gVoltage: 12-24VLarge working current: 150ASupporting models: all domestic and imported 12-24V starterApprox Size:4.5cm x 8.5cm/1.8 x 3.3inchPackage list:1*Tuning Fuel Boost PinNote:1. Monitors are not calibrated same, item color displayed in photos may be showing slightly Different from the real object. Please take the real one as standard..