Rodrock is a trusted China supplier of Trailer Wiring Circuit Testers. Our Tester undergoes rigorous circuit continuity and functionality testing. The use of high-quality components ensures long-term stability under vehicle vibration and adverse weather conditions.
Our product supports both 7-pin (for RVs and large trailers with electric brake and reverse light signals) and 4-pin (for small trailers with basic lighting) connectors.
Also Our Tester has Instant LED feedback eliminates guesswork and significantly reduces troubleshooting time.
Plug-and-Play: No batteries or external power supply required, drawing power directly from the vehicle connector for extremely simple operation. Rugged and Durable: The compact design makes it suitable for portable use in the garage, campground, or roadside.
Our Trailer Wiring Circuit Tester Casing Main Materials is High-strength ABS engineering plastic, impact-resistant and corrosion-resistant.
Interface and Probe: High-quality copper alloy, excellent conductivity and wear resistance.
LED: High-brightness, long-life LED.
Lighting system safety check before a trailer or RV trip.
Quick fault diagnosis at auto repair shops and dealerships.
Circuit status inspection when trading in a used trailer.
Routine inspection of the trailer interface by individual vehicle owners.
Our product complies with CE and ROHS safety and environmental directives. The circuit design complies with relevant vehicle interface standards such as SAE J560
1.Before testing, Please ensure that the vehicle and tester connectors are dry, clean, and free of rust.
2.And Do not plug or unplug the connectors in rainy or extremely humid conditions to prevent short circuits.
3.If an LED does not illuminate, first check the vehicle's fuses and then troubleshoot the wiring harness.
4.This product is a diagnostic tool and is not intended to replace a professional multimeter for accurate voltage measurements.
