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CRAFTSMAN CMMT14103 24V circuit tester with red LED and coiled cord

CRAFTSMAN CMMT14103 24V Circuit Tester

SKU CH-W0PH-H1FFX

Tests 6, 12 and 24 volt systems with a sharp probe, red LED indicator and coiled cord extending over 10 ft

  • Features(1) 24V Circuit Tester, Corded Electric, true
  • Height12.83 L x 4.84 W x 1.38 H inches
  • Width12.83 L x 4.84 W x 1.38 H inches
  • Length12.83 L x 4.84 W x 1.38 H inches
  • Weight0.1 pounds
  • TypeVoltmeter
  • Works on 6, 12 and 24 volt systems
  • Red LED lights when connection is made
  • Heat and oil resistant coiled cord extends over 10 ft
  • Sharp probe pierces wires easily
  • Lightweight at 0.1 pounds for easy handling

6-12-24V Circuit Tester

The CRAFTSMAN CMMT14103 is a corded electric circuit tester designed for automotive electrical systems. It operates across 6, 12, and 24 volt systems, making it suitable for a range of vehicles from motorcycles to heavy-duty trucks. A red LED illuminates instantly when a connection is made, providing clear visual confirmation of circuit continuity. The sharp probe allows for easy wire piercing during diagnostics.

Sustained Use With Coiled Cord

The heat and oil resistant coiled cord extends over 10 ft, giving technicians ample reach around engine bays without tension. Because the tool draws power directly from the vehicle's battery via the cord, it remains ready for continuous testing without battery drain or recharge cycles. The lightweight 0.1 pound body reduces hand fatigue during extended troubleshooting sessions. Durable materials withstand shop environments where exposure to fluids and heat is common.

Check Your Diagnostic Needs

Verify that your work primarily involves DC voltage systems within the 6 to 24 volt range, as this tester is not designed for household AC mains or higher voltage industrial equipment. Ensure you have access to the vehicle battery terminals for the corded power connection before starting a job. Buyers needing non-contact voltage detection or multi-meter functions such as resistance and current measurement should consider a different instrument.

Highlights

  • Works on 6, 12 and 24 volt systems
  • Red LED lights when connection is made
  • Heat and oil resistant coiled cord extends over 10 ft
  • Sharp probe pierces wires easily
  • Lightweight at 0.1 pounds for easy handling

Specifications

BrandCRAFTSMAN
Features(1) 24V Circuit Tester, Corded Electric, true
Height12.83 L x 4.84 W x 1.38 H inches
Width12.83 L x 4.84 W x 1.38 H inches
Length12.83 L x 4.84 W x 1.38 H inches
Weight0.1 pounds
TypeVoltmeter

Questions about this item

How much power does the CMMT14103 draw when testing a 24 V circuit all day?

The tester draws only the tiny current needed to light its red LED, so heat and power use stay negligible during continuous use.

What must I already have for the CMMT14103 to work?

A live 6 V, 12 V or 24 V circuit and a solid ground point for the alligator clip are all that is required.

Will the CMMT14103 damage older 6 V wiring when I probe it?

The sharp probe pierces insulation cleanly and the low-current LED test poses no risk to vintage 6 V harnesses.

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