6V–24V DC Auto Circuit Tester Probe | Car Voltage Test Pen
6V–24V DC Auto Circuit Tester Probe | Car Voltage Test Pen
6V–24V DC Auto Circuit Tester Probe – Car Voltage Test Pen
Quickly diagnose electrical faults in any 6V to 24V DC automotive system with this compact, easy-to-use circuit tester probe. Whether you're checking headlights, taillights, turn signals, fuses, or tracing broken wires, this test pen gives you instant visual confirmation — the handle illuminates brightly when a live circuit is detected, making troubleshooting faster and more straightforward than ever.
Key Features
- Wide Voltage Range: Compatible with 6V–24V DC electrical systems — ideal for cars, trucks, motorcycles, boats, and other 12V/24V vehicles.
- Instant LED Indication: Handle light illuminates clearly when a good circuit is detected, providing immediate go/no-go feedback.
- Multi-Purpose Testing: Detects power, ground faults, shorts, and breaks in wires — check headlights, taillights, turn signal circuits, fuses, sockets, and connectors with ease.
- Lightweight & Portable: Compact pen-style design fits easily in a glove box, tool bag, or pocket — ready whenever you need it.
- Durable Construction: Fine workmanship and robust materials for lasting reliability in workshop or roadside use.
- Battery Included: Ready to use straight out of the box — no extra purchases needed.
Specifications
| Voltage Range | 6V – 24V DC |
| Length | Approx. 13.7 cm (5.4 in) |
| Material | Plastic |
| Battery | Included |
| Country of Origin | Made in Mainland China |
What's in the Box
- 1 × DC Circuit Tester Probe Pen (instructions not included)
Safety Notes
- Do not expose to water or fire.
- Do not compress, drop, or subject to impact.
- Keep out of reach of children.
- For use with DC 6V–24V systems only — do not use on AC or higher-voltage circuits.
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Learn more: FuelEconomy.gov on vehicle maintenance
Frequently Asked Questions
Q: What vehicles is this 6V–24V DC circuit tester compatible with?
A: This DC circuit tester probe is designed for any vehicle or equipment running a 6V to 24V DC electrical system — including standard 12V cars, trucks, SUVs, motorcycles, ATVs, boats, and 24V commercial or heavy-duty vehicles. It is not suitable for AC household current or voltages outside the 6V–24V DC range.
Q: How do I know if a circuit is live when using this test pen?
A: Simply touch the probe tip to the circuit or wire you want to test while clipping the ground lead to a known ground point. If the circuit is complete and carrying voltage within the 6V–24V DC range, the handle will illuminate, giving you an instant visual signal that the circuit is good.
Q: Can this probe tester detect both shorts and open (broken) wires?
A: Yes. By probing at different points along a circuit, you can identify where voltage is present and where it stops — helping you locate shorts, open breaks, faulty fuses, bad connections, and defective sockets quickly and efficiently.
Q: Does a battery come included with the circuit tester?
A: Yes, a battery is included, so this circuit tester probe is ready to use right out of the box with no additional accessories required.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.