3-36V DC Car Truck Voltage Circuit Tester

17.99

Precision diagnostics for every 12V and 24V system. This heavy-duty 3-36V DC circuit tester features a clear backlit LCD display for real-time voltage readings and a high-visibility LED indicator for instant polarity detection (Red for Positive, Green for Negative). With a sharp stainless steel probe and a durable coiled cord, it’s the fastest way to troubleshoot fuses, switches, and wiring in cars, trucks, and boats.

Versatile Voltage Range Unlike standard 12V test lights, this digital probe operates on a broad spectrum from 3V to 36V DC. This makes it compatible with:

  • Cars & Pickups (12V systems)

  • Heavy-Duty Trucks & Trailers (24V systems)

  • Marine & Industrial Equipment

  • Motorcycles & ATVs

Real-Time Digital Accuracy Stop guessing the brightness of a bulb. The integrated LCD screen provides an accurate numerical voltage reading, helping you identify “phantom” voltages or voltage drops that a standard test light might miss.

Smart Polarity Identification The dual-color LED in the handle gives you immediate visual feedback without needing to look at the screen:

  • Red LED: Indicates contact with a Positive (+) pole.

  • Green LED: Indicates contact with a Negative (-) pole or ground.

Rugged & Ergonomic Design

  • Sharp Steel Probe: Easily pierces wire insulation to test circuits without stripping them.

  • Spring Cable: The high-quality coiled cord extends to provide several feet of reach, allowing you to move from the battery to the interior fuse box with ease.

  • Protective Probe Cap: Keeps the sharp tip safe and prevents accidental punctures when stored in your toolbox.

  • No Battery Required: Draws its power directly from the circuit being tested.