Automotive Short and Open Circuit Finder, Car Electrical Wire Cable Diagnostic Tester
See the probe in use
Automotive electrical diagnostics
A receiver and transmitter kit for tracing vehicle wiring and investigating open or short circuits. Follow the signal through a harness and focus your troubleshooting where it matters.
The challenge
A fault inside a bundle or behind trim can be difficult to locate by sight alone. This kit helps you follow a circuit path before deciding where to inspect more closely.
Trace a selected wire through a crowded harness.
Use audible and visual feedback to guide a closer check.
The flexible probe can be positioned around vehicle wiring.
At a glance
How to use
Identify the circuit and consult the included instructions before connecting the transmitter.
Attach the leads as directed for the selected test mode.
Move the receiver probe along the wire path and investigate changes in its indication.
Kit design
The handheld receiver pairs with a separate transmitter and clip leads. A bendable probe helps you approach wiring in awkward areas without forcing the main body into the space.
Where it fits
Follow a known wire path through a busy interior harness.
Check a suspected circuit before opening up a bundle.
Trace connections when an installed electrical accessory needs diagnosis.
Product details
Care and cautions
Use the test mode and connection method described for your specific circuit.
Check the vehicle system and tool ratings before connecting the leads. Do not use on high voltage vehicle systems.
Disconnect the leads after use and keep the probe and cords protected in the case.
Customer reviews
★★★★★
“I was checking a wiring issue on my trailer and liked being able to follow the cable without stripping the insulation. The tone gave me a useful way to narrow down where to look. It’s a handy tool to have for electrical projects.”
★★★★★
“Getting around the wires under my dashboard is usually awkward. The flexible probe helped me reach into tighter spots, and the LED indicators were easy to check while I worked. It made the job feel more manageable.”
★★★★★
“I like having both sound and light signals when tracing a circuit. If the garage gets noisy, I can still watch the LEDs for a reading. It’s been a practical addition to my diagnostic tools.”
FAQ
It is intended to help trace automotive wiring and investigate suspected open or short circuits.
Yes. The kit shown has a handheld receiver with a flexible probe and a separate transmitter with clip leads.
Check the tool's instructions and ratings against the circuit first. Do not connect it to a high voltage vehicle system.
Follow the included instructions for the circuit and test you plan to perform.
The product images show a carrying case alongside the receiver, transmitter and leads.