Oct 06, 2026
KM10 Power Circuit Probe Tester with Live Waveform Display
$101.99$149.9932% off
*Price verified 53 min ago - prices may change
About this deal
- Find Electrical Faults Faster — Track down short circuits, open circuits, bad grounds, voltage drops, and wiring faults without blindly removing panels or tracing wires. This power circuit probe tester combines short finding, wire tracing, red/green polarity LEDs, and audible alerts to help narrow down electrical problems quickly on 6V–30V vehicle systems.
- See Signals in Real Time — Some electrical faults only appear as weak, unstable, or intermittent signals that a basic tester may miss. The color TFT screen displays voltage, frequency, duty cycle, PWM signals, injector pulses, and sensor waveforms, helping this automotive circuit tester reveal signal dropouts, unstable grounds, and other hard-to-find electrical issues.
- Test Before You Replace — Apply power or ground to fans, fuel pumps, relays, injectors, solenoids, motors, trailer lights, and other components to verify operation before replacing parts. This automotive electrical tester helps determine whether the problem is in the component, wiring, power supply, or ground circuit.
- Built-In Protection — The built-in 10A auto-reset circuit breaker automatically cuts power when an overload or short circuit occurs, then restores operation within seconds. Keep testing circuits and components without repeatedly replacing fuses or manually resetting the tool, making electrical troubleshooting safer and more efficient.
- Reach the Whole Vehicle — A 20FT main cable plus 20FT extension provides up to 40FT of reach for trucks, trailers, RVs, buses, boats, and other long vehicles. This electrical circuit tester lets you work from the battery area to rear wiring points more easily, while the built-in LED improves visibility under dashboards and inside dark engine bays.
- Diagnose More with One Tool — Combine circuit testing, short circuit finding, wire tracing, polarity checks, component activation, and live signal analysis in one automotive circuit tester. Designed for cars, trucks, motorcycles, trailers, RVs, buses, and boats, KM10 helps diagnose wiring, signal, power, and ground circuit faults more efficiently.
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