Power Probe Power Probe III Circuit Tester (PP3CS Red) — Digital Voltmeter, Audible Monitor, 20-ft Cord

The Power Probe III (PP3CSRED) is a handheld automotive circuit tester that quickly supplies power, grounds, and measures voltage for rapid electrical diagnostics.

If you work on cars, trucks, motorcycles, or other 12–24 VDC equipment, the Power Probe III gives technicians and DIYers a compact, all-in-one way to trace faults, activate components, and verify circuit integrity without swapping out parts. Built with a clear digital voltmeter, audible monitoring, and a long cord with accessory clips, this unit speeds troubleshooting while reducing guesswork.

How does the Power Probe III help find electrical faults faster?

The tool lets you apply fused power and ground to a circuit, check voltage levels with a built-in digital meter, and listen for continuity or intermittent issues using audible monitoring. Instead of disconnecting harnesses or bench-testing parts, you can isolate problems right at the vehicle harness or connector.

• Apply momentary or continuous fused power to test actuators and relays.
• Use the banana jack and auxiliary ground for flexible test setups.
• Audible circuit monitor detects intermittent connections without visual contact.
• Digital voltmeter displays precise voltage for quick comparison to spec.

What features does this model include for hands-on troubleshooting?

This version is equipped with essential measurement and activation tools in a single handheld package: a clear digital voltmeter, min/max capture functions, audible circuit monitoring, and a standard 4mm banana jack for accessories. It also arrives with battery hookup clips and a 20-foot cord so you can reach across large vehicles or workspaces.

• Digital voltmeter with min/max recall to catch transient events.
• Audible monitoring for continuity and intermittent faults.
• 20-foot cord gives extended reach to far-away connectors or panels.
• Includes battery hookup clips for direct power connections during testing.

Is the Power Probe III compatible with my vehicle or equipment?

The Power Probe III is designed to work on standard 12–24 VDC electrical systems, making it suitable for most passenger cars, light trucks, heavy trucks, recreational vehicles, marine systems, and off-road equipment that use those voltages. It’s not intended for high-voltage electrical systems or AC mains work.

• Works across 12 V and 24 V DC systems common in automotive and equipment applications.
• Not suitable for AC mains or high-voltage hybrid/electric vehicle systems.
• Fused outputs protect the vehicle and tool during power application.
• Handheld form factor fits in toolboxes and mobile service kits.

Who is this for? The Power Probe III (PP3CSRED) is aimed at professional mechanics, fleet technicians, and informed DIYers who need a single, portable instrument to power circuits, establish grounds, and measure voltage quickly. It benefits anyone who diagnoses intermittent electrical problems, bench-tests actuators and relays, or prefers to validate harness integrity before replacing components. If you require a compact, multi-function diagnostic aid for 12–24 VDC systems, this tool helps cut diagnostic time and uncertainty.