Sealey Tools PPX 6-24 volt Auto Circuit Electrical Test Probe Tester PlusModel No. PPXNett Weight: 0.27kgKey Features: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 motorsTests continuity in:- Switches- Diodes and Fuses- Relays- Wiring harnessesDetect 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.