Automotive Circuit Tester, 6–36V DC, 13 ft Lighted Probe

Automotive circuit tester for fast 6–36V DC electrical diagnostics, helping you pinpoint power, ground, and wiring faults without guessing. Use the probe to check polarity and continuity, trace wire issues, and verify component operation on cars, SUVs, trucks, RVs, motorcycles, boats, and other low-voltage systems. The 13 ft / 4 m cable reaches across the vehicle for convenient under-hood and cabin testing.

• Delivers 6–36V DC testing to quickly identify power circuit faults and current flow issues


• Checks polarity and continuity to confirm correct wiring, grounds, and connections


• Activates components to verify function of lights, fans, wipers, window motors, injectors, and more


• Extends reach with a 13 ft / 4 m cable and universal plug for flexible, long-range probing


• Protects durability with ABS housing, stainless steel probe, silicone cap, and overload protection

Built for real workshop conditions, this power circuit probe tester combines a rugged, insulated body with a corrosion-resistant probe to handle repeated use around engines, panels, and harnesses. It’s a practical tool for troubleshooting intermittent electrical problems, confirming repairs, and speeding up diagnostics on 12V/24V systems and other 6–36V DC circuits. Not designed for household 220V circuits. Grab yours today and keep electrical testing quick, controlled, and consistent.

• Operating voltage: 6–36V DC


• Cable length: 13 ft / 4 m


• Materials: ABS shell; stainless steel probe; silicone cap


• Color: Orange


• Dimensions: 9.1 x 1.44 x 1.22 in (230 x 36.7 x 31 mm)


• Net weight: 0.6 lb / 0.27 kg