TESlite Enhanced Voltmeter Leads were invented and patented by a mechanic, and have part numbers from CAT, VOLVO and UPS! With one push of the TESlite button you can load test a circuit and identify wiring faults faster than you ever thought possible. We can show you how to use your digital voltmeter in ways you never thought of. TESlite Voltmeter Leads work with your digital voltmeter with voltage drop. The manufacturer requires a voltmeter - we make it work for you! Check out the VIDEO tab to see a collection of movies we've created to help you understand what the tool is and how it works. TESlite Voltmeter Leads don't damage wiring insulation because we have SteadyPinTM Tips that sit on a male connector pin. Some tools are designed with dangerously sharp tips that defeat wiring insulation. We make it possible to diagnose electrical faults from the load with a digital voltmeter in no time at all, once you know how the meter works. If you've ever been frustrated by those problems that last for days, trust us when we tell you that that is a thing of the past.