How To Use A Continuity Tester On A Light Switch. When the switch is ON the tester should read close to zero. Locate your cars fuse box panel.
With the circuit de-energized connect the test leads across the component being tested. Testing a Switch with a Continuity Tester. If the continuity testers continuity LED glows the device is working.
To test continuity all you have to do is stick 2 terminals on your multimeter against 2 ends of an electrical current.
The cheapest ones sense when current is going between two point. When finished remove the leads in reverse order. This type of tester has two lead wires that uses the battery voltage of the tester to test a circuit which in this example is the circuit components of a switch. The tester should light up when the switch lever is in the on position but should not light up when the switch lever is off.
