Quickly and safely tests high and low voltages on all vehicle

Includes computerized engine

Checks high and low voltages (power and ground) on 6, 12 and 24V system

High impedance to protect sensitive electronic sensors, microprocessors, electronic ignition components and air bags

LED indicates red for power (high) and green for ground (low)

Connects the red lead to a power sources and the black lead to a ground source