- Fits: LT160, LT160E, QUADRUNNER 2003, 2004, and 1989-1992 ATVs. See the product details for applicable models. - Why you need it: If you hear a clicking sound when turning the key, see dim lights, or the starter does not respond, a faulty starter relay is often the cause. If the engine won’t start or starts inconsistently, diagnosing the relay early can prevent unnecessary repairs. - Key benefits: Restores reliable starting performance, reduces no-start scenarios, and helps ensure timely repairs by enabling quick diagnosis. - Installation overview: Replacing a defective ignition solenoid relay requires disconnecting the battery, removing old components, and installing the new relay. Correct orientation and secure connections are essential for optimal performance. For best results, professional installation is recommended. - Compatibility check: The starter solenoid assembly must be compatible with specific vehicle models and engines. Different vehicles have different electrical requirements, so selecting the correct starter relay is crucial. Always read the manufacturer specifications before purchase. - Use scenarios: - An LT160/LT160E owner experiences a key-turn click and dim lights; installing this relay restores reliable starting. - An ATV from 1989–1992 with intermittent starting issues is brought back to consistent operation after replacement. - A QUADRUNNER from 2003–2004 replaces an aging ignition solenoid to achieve dependable starts.