Circuit

Versatile tester with internal power source that allows for use with live and non-live 6V, 12V, and 24V DC systems. Easy detection with patented edge-lighting that allows the entire handle and logo to illuminate red when power is detected and green when grounded. View Details

It is suitable for testing electrical D.C. circuit on vehicles within the voltage range of 6-24V only. Tester with needle point probe for easy back probing & piercing. Comes with screw in alligator clip for additional versatility. View Details

Tests standard automotive electrical DC 6-24V circuits. When black ground clip is clamped to a suitable earth point and contact tip is placed onto testing sample, test bulb will glow if current is present. Heavy-duty, stainless steel probe with insulated shaft... View Details

Can be used with most 12V mini jump starters with the standard EC5 port. Allows for more portability and freedom from long battery wires. Factory correct terminals means less of a need to back probe... View Details

Tests standard automotive electrical DC 12-42V circuits. Safe for low current circuits and hybrid vehicles. Automatic voltage identification featuring blue for under 40V and red for over 40V... View Details

Matco Exclusive circuit tester. Probe is insulated to prevent the possibility of shorting the side of the probe to other components. Heavy-duty alligator clamp for secure connections... View Details

Heavy-duty circuit tester with digital LCD display to accurately show DC voltage. Probe is insulated to prevent the possibility of shorting the side of the probe to other components. 12' coil cord and heavy-duty alligator clamp for secure connections... View Details

Detect DC voltages from 3 to 28V. Indicates detection with an LED light, sound and vibration. High impedance, computer/sensor safe... View Details

Replacement bulb for circuit testers. View Details

Insulated probe with shrink tubing prevents shorting the side of the probe to other components. Features incandescent bulb (part # HW27460) . View Details

Converts circuit tester into a 4mm banana connector. Allows you to check several different connectors with 4mm adapter. View Details

Checks high and low voltages on 6V-12V and 24V circuits. Connect the red lead to a power source and the black lead to a ground source. Tester will light up red for power and green for ground during testing... View Details

Tests standard automotive electrical DC 6 and 12V circuits. Features heavy-duty battery clip and 5' of flexible, heavily insulated rubber wire to withstand rugged use. View Details