Circuit Tester

Features & Benefits: Two tools in one - works as a circuit tester and jumper w... Features & Benefits: Two tools in one - works as a circuit tester and jumper wire The probe, handle, cord and clamp are reinforced for durability Comes with a strain relief spring on the cord Heavy duty circuit tester for checking low voltage up to 12... more

Features and Benefits: 3-1/2" long insulated probe Insulated alligator clip 7-... Features and Benefits: 3-1/2" long insulated probe Insulated alligator clip 7-1/4" overall length Orange coiled cord extends to 12ft. Bulb is replaceable Can be used to detect power, ground and find shorts and breaks. Also use it to troubleshoot... more

Features and Benefits: 12' heavy duty red coil cord lead Checks 6 and 12 volt ... Features and Benefits: 12' heavy duty red coil cord lead Checks 6 and 12 volt systems Ergonomic slim designed clear handle Bright red, slim style replaceable bulb Positive contact molded strain relief Heavy duty, stainless steel probe with insulated... more

Features and Benefits: Quickly tests voltage up to 28 Volts Works on any circu... Features and Benefits: Quickly tests voltage up to 28 Volts Works on any circuit up to 28 volts including many heavy duty applications on large trucks and farm implements: heavy duty probe, cord and clamp The probe is insulated with high visibility... more

Features and Benefits: By far the largest selling and most widely used automot... Features and Benefits: By far the largest selling and most widely used automotive circuit tester Quickly checks all 6 and 12 volt systems Use with power on Supplied with 48" ground wire Use to locate shorts, grounds and open circuits more

Features and Benefits: A heavy duty circuit tester for lifetime use The probe,... Features and Benefits: A heavy duty circuit tester for lifetime use The probe, handle, cord and clamp are reinforced for extra durability Comes with a strain relief spring on the cord Skin-packed Shipping weight 7 oz. Lisle's heavy duty circuit tester... more

Features and Benefits: Safe for automotive computers Won’t damage sensitive el... Features and Benefits: Safe for automotive computers Won’t damage sensitive electronic components Draws less than 21mA at 12 volts DC Operating range 3-28 volts The red light indicates positive polarity, green indicates negative polarity Shipping... more

Features and Benefits: No ground wire or clip required Safe with ECM's, sonsor... Features and Benefits: No ground wire or clip required Safe with ECM's, sonsors, tranducers, airbags Detects from 3 to 28 volts Light, sound and vibration Rugged stainless steel construction Unique V-groove needle accessory for wire piercing and safe... more

Vehicle-Side Trailer Circuit Tester Pack Vehicle-Side Trailer Circuit Tester Pack more

Features and Benefits: Hooded probe protects your fingers and automatically ce... Features and Benefits: Hooded probe protects your fingers and automatically centers the wire Small size allows easy use even in the tightest places Quickly test low voltage up to 28 volts Alligator clip grounds tester Skin-packed. Shipping wt. 3 oz. more

Features and Benefits: Heavy duty tester signals with a light and buzzer Teste... Features and Benefits: Heavy duty tester signals with a light and buzzer Tester kit tests low voltage up to 28 volts Finds electrical shorts, checks polarity, detects battery drain, and checks circuits from a distance Heavy duty coil cord extends over... more

Features and Benefits: Operated between 3 to 28 volt No wire or clip needed wh... Features and Benefits: Operated between 3 to 28 volt No wire or clip needed while diagnosing polarity Made of rugged chrome metal Contains LED and buzzer indicator Includes long-life alkaline 23A batteries Safe for 6 and 12 volt systems This unit does... more

Features and Benefits: The best quality electrical circuit tester available fo... Features and Benefits: The best quality electrical circuit tester available for checking 6 and 12 volt systems Has heavy duty battery clip 5' of tough, flexible, heavily insulated rubber wire is retained in spring supported strain relief designed to... more

Features and Benefits: Test for voltage in 6 and 12 Volt systems Ground clip a... Features and Benefits: Test for voltage in 6 and 12 Volt systems Ground clip and touch probe to point being tested The tester bulb will light if voltage is present more

Features and Benefits: Features an extra long wire that stretches up to 12 fee... Features and Benefits: Features an extra long wire that stretches up to 12 feet for use, then automatically retracts Quickly and easily check electrical circuits and accessories on 6 and 12 volt systems Supersharp probe Heavy duty ground clip with... more

Features and Benefits: Features an extra long wire that stretches up to 12 fee... Features and Benefits: Features an extra long wire that stretches up to 12 feet for use, then automatically retracts Great for use on cars, trucks, boats, trailers, motorcycles, airplanes and snowmobiles A heavy duty ground clip with insulator is on... more

Features and Benefits: Troubleshoots tractor trailer circuits One person can n... Features and Benefits: Troubleshoots tractor trailer circuits One person can now test all the lighting Allows bypassing of troubled circuitry while on the road Eliminates guesswork Packaged with an extra jumper connector The 7 round pin trailer tester... more

Features and Benefits: Quickly and easily test trailer circuits on most light ... Features and Benefits: Quickly and easily test trailer circuits on most light to medium duty trucks and campers Tests vehicle circuits on 7 Flat/Spade Pin connections - quickly identifies faulty circuits Made from LEDs and ABS plastic - ensures... more

Features and Benefits: 5' heavy duty cord Checks 6 and 12 volt systems Ergonom... Features and Benefits: 5' heavy duty cord Checks 6 and 12 volt systems Ergonomic, slim designed clear handle Bright red, slim style replaceable bulb Positive contact-molded strain relief Designed for testing electrical circuits and locating shorts,... more

Features and Benefits: 12' heavy duty, red coil, cord lead Checks 6 and 12 vol... Features and Benefits: 12' heavy duty, red coil, cord lead Checks 6 and 12 volt systems Ergonomic, slim designed clear handle Bright red, high intensity/slim style replaceable bulb Positive contact molded strain relief Heavy duty, stainless steel probe... more