Automotive Circuit Tester 6-24V DC | 13-Ft Probe & Breaker Finder

Diagnose Electrical Issues Fast with This Pro-Grade Automotive Circuit Tester

Whether you're troubleshooting a faulty fuse, tracing a short, or testing continuity in your car, SUV, or truck, this 6–24V DC Power Circuit Probe Tester gives you instant, reliable results. Designed for both DIY enthusiasts and professional mechanics, this versatile 12V circuit tester simplifies electrical diagnostics and saves you time and money at the shop.

Key Features

• Wide Voltage Range (6–24V DC): Compatible with virtually all 12V and 24V automotive electrical systems, including cars, SUVs, trucks, motorcycles, and RVs.
• 13-Foot (4M) Lead Wire: Extra-long ground cable gives you the reach to test hard-to-access circuits without repositioning your ground clamp.
• Bright LED + Audible Indicator: Instantly identifies live circuits and open/closed circuits with a clear visual light and sound alert — no guessing required.
• Circuit Breaker Finder: Quickly locate faulty circuit breakers in your vehicle's fuse box for fast diagnosis and repair.
• Continuity Testing: Confirm whether a circuit is complete or broken without needing a full multimeter setup.
• Sharp Steel Probe Tip: Pierces wire insulation and reaches tight terminal spots with ease.
• Durable Clamp & Insulated Handle: Heavy-duty alligator clip and ergonomic grip ensure safe, secure connections during every test.
• No Battery Required: Powered directly through the vehicle's circuit — always ready to use.

What's in the Box

• 1× Circuit Probe Tester with 13-ft lead wire
• 1× Heavy-duty alligator ground clamp
• 1× User instruction guide

Specifications

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

Why Choose This Circuit Tester?

Electrical faults are one of the most common and frustrating vehicle issues. This circuit probe tester puts professional-level diagnostics right in your hand. The generously long lead wire means fewer setup hassles, while the bright LED and audible beep deliver instant, clear feedback — even in dim garage lighting. From checking a blown fuse to verifying ground connections, this is an indispensable tool for any automotive toolkit.

For guidance on electrical safety when working on vehicles, refer to the OSHA Electrical Safety Guidelines.

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Frequently Asked Questions

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

A: This circuit probe tester supports 6V to 24V DC systems, making it compatible with standard 12V cars, SUVs, and trucks as well as 24V heavy-duty vehicles and trucks.

Q: Does the circuit tester require batteries to operate?

A: No — this tester draws power directly from the vehicle's electrical circuit being tested. No batteries are needed, so it's always ready to use right out of the box.

Q: Can I use this tester to find a faulty fuse or circuit breaker?

A: Yes! The circuit breaker finder function lets you quickly identify blown fuses or faulty breakers in your vehicle's fuse box. Simply probe each circuit; the LED and audible alert will indicate live or broken circuits instantly.

Q: Is the 13-foot lead wire long enough for most vehicles?

A: Absolutely. The 13-foot (approx. 4-meter) lead wire is designed to give you ample reach across the full length of most cars, SUVs, and trucks, allowing you to clip the ground lead at one point and probe circuits throughout the vehicle without moving the clamp.