6V–36V Car Circuit Tester Pen | Dual LED Voltage Probe
6V–36V Car Circuit Tester Pen | Dual LED Voltage Probe
6V–36V Car Circuit Tester Pen with Dual-Color LED Indicator
Take the guesswork out of automotive electrical diagnostics with this professional-grade circuit tester pen. Compatible with 6V, 12V, 24V, and 36V DC/AC systems, it's the go-to tool for mechanics, auto enthusiasts, and DIYers who need fast, accurate circuit verification on cars, trucks, motorcycles, and boats.
Key Features
- Wide Voltage Range (6V–36V): Works across a broad range of DC and AC electrical systems — ideal for passenger vehicles, trucks, motorcycles, and marine applications.
- Dual-Color LED Indicator: The three-in-one dual-color LED display gives you instant, at-a-glance readings so you can quickly confirm whether a circuit is live or faulty.
- Sharp Steel Probe Tip: The precision-ground steel tip pierces wire insulation cleanly, making it easy to check fuses, switches, connectors, and wiring without damaging the circuit.
- Alligator Clip Ground Lead: Simply clamp the alligator clip to any ground point (chassis metal or battery negative), then probe the circuit — a lit indicator confirms a live, energized circuit.
- Frost-Resistant Cable: The flexible, cold-weather-rated cable stays pliable even in low temperatures, ensuring reliable performance in any working environment.
- Compact & Lightweight: At just 156.9 × 9.4 mm, this pen fits comfortably in your hand and slides easily into a tool pouch or glove box.
Specifications
| Voltage Range | 6V – 36V (DC/AC) |
| Material | ABS + Metal + LED + Soft Wire |
| Dimensions | 156.9 × 9.4 mm (6.18 × 0.37 in) |
| Cable Length | 117 mm |
| Compatible Vehicles | Cars, Motorcycles, Trucks, Boats |
| Batteries Included | No |
| Country of Origin | Made in China |
How to Use
- Clamp the alligator clip to a ground point such as the vehicle chassis or battery negative terminal.
- Touch the probe tip to the conductive metal point you want to test in the circuit.
- Read the LED: if the stylus LED lights up but the bulb does not, the circuit is complete and functioning normally. If neither lights, the point is open or faulty and requires further inspection.
Package Contents
- 1 × 6V–36V Car Circuit Tester Pen
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Frequently Asked Questions
Q: What voltage systems is this car circuit tester pen compatible with?
A: This circuit tester pen is designed to work with 6V, 12V, 24V, and 36V DC and AC electrical systems, making it suitable for most cars, motorcycles, trucks, and boats commonly found on the road or water.
Q: How do I know if a circuit is working correctly when using this tester?
A: Clamp the alligator clip to a ground point, then touch the probe tip to the circuit you want to check. If the stylus LED illuminates but the bulb does not, the circuit is complete and operating normally. If neither the LED nor the bulb lights up, the circuit is open or faulty and needs further inspection.
Q: Can this circuit tester pen pierce wire insulation without damaging the wire?
A: Yes. The sharp steel probe tip is designed to gently pierce wire insulation to make contact with the conductor inside. It allows for quick checks without causing significant damage to the insulation, which is especially useful for diagnosing faults on existing vehicle wiring.
Q: Is this tester suitable for use in cold weather?
A: Absolutely. The tester features a frost-resistant, flexible cable that remains pliable in cold temperatures, ensuring consistent and reliable performance during winter or cold-weather automotive work.