• 6-24V Auto Probe with an integral worklight to aid use in dark engine bays plus an audible circuit tester for when the LED on the probe cannot be seen. • A brilliant tool for the auto electrician and mechanic. • Carry out the following tests on systems from 6V up to 24V quickly and efficiently: • Polarity test. • Power up components prior to fitting including: - Cooling fan motors - Fuel pumps - Window/Sunroof motors - Relays and Lamps - Wiper motors • Tests continuity in: - Switches - Diodes and Fuses - Relays - Wiring harnesses • Detect short circuits. • Locate bad earths quickly. • Fitted with a sensitive short circuit protection device. • Safe to use around vehicle’s electronic management systems. • Power switch self test means no need to: - Double check your circuit, tester on the vehicle’s battery. - Reconnect hook-up clips to test polarity. - Search for earth points. - Burn out fuses locating faults.