Simplify your vehicle diagnostics with the Car Relay Tester 12V with LED. Designed for universality, it seamlessly checks 4-pin and 5-pin relays across various vehicle types, including cars and motorcycles. The compact, plug-and-play design means no technical expertise is required, making it accessible for everyone. Enjoy peace of mind and save on repair costs by spotting electrical issues early. Add this reliable tester to your toolkit today!