Light bulb and motor switches — check

1. Remove the appropriate switch. Simple switches have only two leads for connecting a wire. In this case, one output should always have (+), and on the other output, a plus appears after switching on. There are also switches with multiple terminals. For these switches, you should find out from the diagram which terminal should be energized. Turn on the ignition first, if necessary.

2. Check up presence of tension by means of a control bulb. If the control lamp lights up, turn on the switch and check the voltage at its output terminal. If there is voltage, then it is safe to say that the switch is working. If there is no voltage at the input terminal, this indicates a break in the supply wire. It is necessary to check the power supply according to the electrical circuit, and, if necessary, lay a new wire.