Motorcycle Igniter Relay Fits for BF135 BF150 BF135A4 BF150A4 LD/XD LU/XU LCD/XCD LCU/XCU 38550-ZY6-003 Solenoid Switches The motorcycle igniter relay is a key component of the ignition system, responsible for controlling the flow of electrical current from the to the starter motor.When the ignition is activated, the relay engages the starter motor to crank the engine.This unit is designed for use with BF135, BF150, BF135A4, BF150A4, LD/XD, LU/XU, LCD/XCD, and LCU/XCU models, serving as a direct replacement 38550-ZY6-003.Constructed with materials suited for operational demands, the igniter relay resists heat, vibration, and corrosion.It ensures consistent electrical conductivity, supporting engine starts and reducing the risk of power interruptions.The design allows for straightforward installation without modifications, as it connects directly into the existing wiring harness.Symptoms of a failing igniter relay include difficulty starting the engine, intermittent starting behavior, audible clicking when turning the key, and unexpected drain.Replacing a worn relay can restore normal starting function.Installation involves disconnecting the , removing the old relay from its mounting location near the starter motor, connecting the unit, and verifying proper upon reconnection.Regular inspection of electrical connections and terminals helps maintain functionality over time.This is an aftermarket spare.Brand and model mentions do not imply manufacturer association.