Tests for voltage, continuity, short circuits & bad earths. Also suitable for energizing components such as motors, relays & fuel pumps on or off the vehicle. Complete with 4.5m of cable & crocodile clips. Ro HS compliant. Powers up components prior to fitting: cooling fan motors, fuel pumps, window & sunroof motors, wiper motors, relays & lamps, Tests continuity in switches, relays, diodes, fuses & wiring looms Tests polarity on cables & sockets, finds short circuit & bad earths. Powered by vehicles own 6-24volt DC power supply & complete with 4.5m cable. Fitted with sensitive trip device to prevent circuit damage. Computer safe Additional Information 6-24 Volt. Tests for voltage, continuity, short circuits & bad earths. Also suitable for energising components such as motors, relays & fuel pumps on or off the vehicle. Complete with 4.5m cable. Time saver.