CircuitPen™ Automotive Circuit Tester

A test light tells you one thing: power is here, or it isn’t. The CircuitPen™ reads polarity, checks continuity, finds shorts and opens, and can send power or ground to a component to see whether it works. Same size, same one-handed use, far more information.

No. Clip the lead, touch the probe to the wire, and read what it tells you. It identifies positive from negative on contact, so you are not guessing which wire you have hold of.

That is what it is built for. It identifies short circuits, open circuits and poor connections, so you can narrow a fault down to the section causing it instead of working through the whole harness.

Yes, and it goes further than checking them. The component-activation function sends power or ground straight to a part, so you can trigger it directly and see whether the part has failed or the circuit feeding it has.

Any 6–24V DC system. That covers most cars, trucks, motorcycles, ATVs, trailers and boats.

3–5 business days in the USA, and 7–10 business days everywhere else.

If you are not completely satisfied, we will make it right. Every SolderStick product is covered by a 30-day money-back guarantee, and our support team is there if you need them.