• 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 4.5m cable allowing access to the rear of the vehicle and supplied with instructions.