LED Long Probe Circuit Tester

Quickly and safely tests high and low voltages on all vehicle voltages, including computerized engine.
1. Checks high and low voltages ( power and ground ) on 6,12 and 24 Volt system.
2. High impedance to protect sensitive electronic sensors, microprocessors, electronic ignition components and air bags.
3. LED indicates red for power ( high ) and green for ground ( low ).
4. Connects the red lead to a power source and the black lead to a ground source.