• May 30, 2026 auretr2012 test and repair basic electrical circuits epair. Here's a list of commonly used instruments: Multimeter: Measures voltage, current, and resistance. Test Lamp: Checks for presence of voltage. Insulation Tester: Tests insulation resistance for safety. Screwdrivers and Pliers: For disassembly and component replacement. Wire Strippers: Prepar BY Dane Stark