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.

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Detailed description

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.