CIRCUIT TESTERS in our Tool Box
60 results found
- The CT100 is a professional automotive circuit tester built for speed, accuracy, and everyday reliability. It helps diagnose electrical issues quickly, identifies polarity, runs load tests, and provides clear audible and visual alerts to take the guesswork out of repairs. Built rugged with a long oil-resistant cable and interchangeable probe and clip, it works on cars, trucks, RVs, and EVs. No complicated setup—just fast, precise results for pros and DIYers alike.
- SKU: TPDCT100
- GTIN: 0810139303909
- Availability: In stock
- A Straightforward Relay Tester That Will Easily And Quickly Test Most 12 And 24 Volt DC Automotive Relays. Tests relays by simply clipping the test leads onto the relay terminal pins using a 12 or 24v DC power source. Tests a wide range of 4 and 5 pin relays. Including shielded, nonshielded, relays with different pin sizes and 4 pin normally closed relays that other testers may incorrectly show fail.
- SKU: LIS60150
- GTIN: 083045601500
- Availability: Out of stock
- SKU: PWPPPKIT04
- Availability: In stock
- The original Power Probe 3 uses a 20ft cable which attaches to the vehicle’s battery, allowing the user to perform an electrical test anywhere in, or around the vehicle.
- SKU: PWPPP3CSGRN
- GTIN: 00087825000791
- Availability: In stock
Energizes a Fuel Pump with the Push of a Switch!
The Relay Bypass Switch with Amp Loop energizes fuel pumps and any 12V relay by powering a DC motor for testing. It also makes DC motor actuation and current monitoring easy.- SKU: IPA9038A
- GTIN: 0893509001582
- Availability: In stock
- SKU: PWPPPDM500MAXCBINT
- Availability: In stock
- The 76 Relay Circuit Pro is a tool that can test an entire circuit from the battery to the component in question as well as determining if the relay itself is functioning properly.
- SKU: CAL76
- Availability: Out of stock
- SKU: PWPPPECT3000
- GTIN: 00087825003136
- Availability: In stock
New improved adapters allow better accessibility in tightly spaced fuse boxes.
- SKU: ESI309A
- GTIN: 00858834005445
- Availability: In stock
- SKU: PWPPPTK0005
- GTIN: 0816724020404
- Availability: In stock
- High quality terminal disconnect tool eliminates damage to wires or terminal blocks *Technical photo is representational and may not depict this exact terminal tool
- SKU: 9812P
- Availability: Out of stock
- Stress Test Circuits, Locate Shorts and Reset Breakers Without Damaging Fuse Boxes
- SKU: IPA8016A
- Availability: In stock


































