TESlite Voltmeter Leads Better than a lightbulb-style tester because it uses a calibrated meter, TESlite TesLOAD with TESlite Voltmeter Leads allow you use your voltmeter as a CIRCUIT LOAD TESTER Wire piercing not required with TesLOAD with TESlite Voltmeter Leads Locates corrosion in wiring in less than 3-seconds