Automotive Circuit Tester 6-24V DC | 13-Foot Lead Wire Probe

Diagnose Electrical Issues Fast with the 6-24V Automotive Circuit Tester

Stop guessing and start diagnosing. This professional-grade automotive circuit probe tester is engineered for mechanics and DIYers alike, making electrical troubleshooting on cars, SUVs, and trucks quick, safe, and accurate. Whether you're tracing a blown fuse, checking for live circuits, or testing for continuity, this tool has you covered.

Key Features

• Wide Voltage Range (6–24V DC): Compatible with virtually all standard automotive electrical systems — from motorcycles and classic cars to modern SUVs and trucks.
• 13-Foot Lead Wire: Extra-long lead wire gives you the reach to test circuits anywhere in your vehicle without awkward repositioning — even from under the hood to interior fuse boxes.
• Bright Indicator Light: Instantly lights up when voltage is detected, providing a clear visual signal so you know exactly when a circuit is live.
• Circuit Breaker Finder: Quickly locate faulty breakers, blown fuses, and open circuits to pinpoint electrical problems before they become bigger issues.
• Continuity Testing: Test wires, switches, relays, and fuses for continuity — essential for diagnosing shorts and open circuits in your vehicle's wiring harness.
• Durable Build: Sturdy probe tip and heavy-duty clamp are built to withstand regular workshop use. Comfortable grip ensures precise, fatigue-free testing.
• No Battery Required: The tester draws power directly from your vehicle's electrical system — no extra batteries needed to get started.

What's in the Box

• 1 × Circuit Probe Tester with 13-Foot Lead Wire

Specifications

• Voltage Range: 6–24V DC
• Lead Wire Length: 13 Feet (approx. 4 meters)
• Compatible Vehicles: Cars, SUVs, Trucks, Motorcycles, RVs
• Battery Required: No
• Country of Origin: Made in China

Perfect For

• Home mechanics and auto enthusiasts
• Professional automotive technicians
• Checking fuses, relays, switches, and wiring
• Diagnosing dead circuits, shorts, and electrical faults
• Pre-purchase vehicle inspections

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Learn More About Vehicle Electrical Safety

Understanding your vehicle's electrical system is key to safe driving and maintenance. For guidance on automotive electrical safety and DIY repair best practices, visit the U.S. Consumer Product Safety Commission (CPSC).

Learn more: Pico Technology

Frequently Asked Questions

Q: What voltage range does this automotive circuit tester support?

A: This circuit probe tester supports a wide DC voltage range of 6V to 24V, making it compatible with most standard 12V and 24V automotive electrical systems, including cars, SUVs, trucks, motorcycles, and RVs.

Q: Does the circuit tester require batteries to operate?

A: No. The automotive circuit tester does not require any batteries. It draws power directly from your vehicle's electrical system through the probe and lead wire connection, so it's always ready to use.

Q: Can I use this tester to check for blown fuses and faulty wiring?

A: Yes! This tool is ideal for continuity testing of fuses, relays, switches, and wiring harnesses. The built-in indicator light illuminates when a live circuit is detected, and the circuit breaker finder function helps you locate faults quickly and accurately.

Q: How long is the lead wire on this circuit tester?

A: The lead wire is 13 feet (approximately 4 meters) long, giving you ample reach to test circuits from the engine bay all the way to interior fuse boxes and dashboard components without needing to reposition the tester.