WUQ V200 Pro 12/24V Automotive Circuit Probe Tester

All-in-one automotive circuit tester

The WUQ V200 Pro combines voltage, resistance, diode, continuity, polarity and ground checks in a single hand-held probe. It traces wires, locates open and short circuits, tests relays, fuses and trailer lights, and activates components such as lights, wipers, fans and fuel injectors. The tool operates on 12 V and 24 V vehicle systems and draws power from the cigarette lighter or battery terminals. Overload protection shuts the unit down and restarts it to protect vehicle electronics.

Technicians diagnosing 6–42 V DC systems

The probe suits professional mechanics and serious DIYers who need breaker finding, wire tracing and component activation across cars, SUVs, vans, trucks, tractors, boats and RVs. It covers 99 % of common vehicle electrical tasks without requiring multiple separate instruments. Buyers who only need a basic 12 V test light or a simple continuity checker will find the feature set excessive. The tool is not designed for high-voltage EV traction systems or AC mains measurements.

Dual-mode operation with breaker finder

Mode I provides AC/DC voltage, resistance and diode measurement with instant polarity indication. Mode II switches to the breaker finder, using tone change to pinpoint open connections, broken wires and current leaks while tracing cables without damaging insulation. Both modes work across the 6 V to 42 V DC range and include short-circuit protection that automatically resets after overload.