Test Relays, Fuses & Fuel Injectors The PB600 power circuit probe tester kit helps diagnose common circuit problems such as blown fuses, faulty relays, open circuits, and poor injector signals. Use this car automotive diagnostic test tool to troubleshoot misfires, no-start issues, and electrical diagnostic problems with clearer results.
See More with Multimeter & Oscilloscope Modes Switch between digital readings and waveform display to understand circuit behavior beyond basic tester probe results. This power probe supports voltage, resistance, current, frequency, polarity, duty cycle, and continuity checks to help reveal bad grounds, sensor faults, and unstable signals.
Power Components & Reach More Areas Send power or ground through the probe and test lights, motors, fans, horns, relays, and more without extra jumper wires. This power circuit probe tool 12-24V electrical tester includes a 10 ft lead, 20 ft extension cable, micro-piercing probe, and protection design for full-vehicle testing.