About This

【INSTANT SHORT CIRCUIT FINDER】 Stop guessing and start fixing! Our tester locates hidden shorts and bad grounds in seconds with a loud buzzer alarm and clear LED indicators, saving you hours of frustrating diagnostic work. (No more blown fuses!)
【QUICK & ACCURATE POLARITY TEST】 Avoid costly mistakes! The Red/Green LED light instantly identifies positive (+) and negative (-) circuits. Ensure perfect connections every time, protecting your vehicle's sensitive electronics.
【ACTIVATE COMPONENTS SAFELY】 Troubleshoot with power! Safely energize fuel pumps, lights, solenoids, and motors directly from the probe's tip. It's like having a remote power switch in your hand.
【BUILT-IN OVERLOAD PROTECTION】 Work with confidence. Our built-in 8A circuit breaker automatically disconnects to prevent damage to your vehicle's ECU or the tester itself, even if you make a mistake.
【LONG REACH & COMPLETE KIT】 Reach anywhere under the hood. The extra-long 5-meter (16.4ft) cable and included auxiliary ground lead give you everything you need to tackle electrical problems in cars.