OEMTOOLS 25936 Mini Circuit Tester – Locate Electrical Shorts and Troubleshoot Circuits in Tight Spaces


SKU B004FEJF6C Category


Troubleshooting electrical issues in your vehicle or appliance can be tricky and time consuming without the right tools. The OEMTOOLS 25936 Mini Circuit Tester allows you to quickly locate shorts, breaks, and bad grounds in 6V and 12V electrical systems. Its compact size and flexible coil cord make it ideal for use in tight, hard to reach spaces.

This circuit tester features a high intensity light bulb and sharp stainless steel probe tip. When contact is made with a hot wire, the bulb lights up to confirm power. If the bulb doesn’t light, you know you have an open circuit. This makes it easy to isolate shorts and identify bad fuses, relays, wires, switches, and connections.

The circuit tester has an insulated heavy duty clip and an alligator clip for attaching to ground. By clipping one end to ground, and probing wires and connections with the other end, you can instantly tell if a circuit is properly grounded. This allows you to pinpoint bad grounds that can cause electrical gremlins.


  • Tests 6V and 12V electrical systems
  • Compact size for use in tight spaces
  • 6 foot hi-visibility coil cord
  • Bright, high-intensity light bulb
  • Sharp stainless steel probe tip
  • Threaded for add-on alligator clip (included)
  • Insulated heavy-duty clip
  • Molded strain relief

The circuit tester has a compact ergonomic body designed to fit comfortably in your hand. It only measures 6 inches long so you can easily maneuver it into tight areas behind dashboards and around wiring harnesses.

The 6 foot long hi-visibility coil cord is extremely flexible, letting you snake it around obstructions to probe hard to reach circuits. An onboard strain relief prevents the cord from accidentally pulling loose from the tester body. When not in use, the cord coils up neatly for storage.

Ideal for Benchtop Use

This mini circuit tester is also handy to have on your workbench. Its small size takes up minimal space, so you can keep it handy for quick circuit checks while repairing small appliances, electronics, lawn equipment, and automotive components.

The high visibility yellow cord makes it easy to locate, even in cluttered work areas. No more wasted time searching for your circuit tester.

How To Use:

  1. Uncoil the cord completely and plug the wire lead into the receptacle on the probe body.
  2. Connect the alligator clip to a known good ground.
  3. Touch the probe tip to the circuit you want to test.
  4. If the light bulb illuminates, power is present. If not, the circuit is open.
  5. To check circuits for proper grounding, attach the ground clip and probe circuits. Bulb illumination indicates a good ground.


  • Tester Voltage: 12V DC
  • Cord Length: 6 feet
  • Probe Tip: Stainless Steel
  • Tester Body: High-Impact Nylon Plastic
  • Light Bulb: #1157 High-Intensity
  • Ground Clip: Heavy-Duty Insulated Alligator Clip
  • Circuit Tester Dimensions: 6″L x 1″D


The OEMTOOLS 25936 mini circuit tester is manufactured under the OEMSUPPLY brand. All OEMSUPPLY products are engineered to high quality standards and backed by a satisfaction guarantee.

OEMSUPPLY has been providing professional grade automotive tools and equipment to repair shops and DIY mechanics for over 30 years. Their tools offer professional features at affordable prices.

So don’t waste time guessing about electrical problems. Locate shorts, opens, and bad grounds quickly with the OEMTOOLS 25936 Mini Circuit Tester. This compact circuit troubleshooting tool belongs in every toolbox.


There are no reviews yet.

Be the first to review “OEMTOOLS 25936 Mini Circuit Tester – Locate Electrical Shorts and Troubleshoot Circuits in Tight Spaces”

Your email address will not be published. Required fields are marked *