Dimmer Switch: Testing and Inspection

Rheostat Inspection

Rheostat Inspection: Step (1):

1. Remove the meter hood from the instrument panel.

Rheostat Inspection: Step (2) & (3):

2. Connect the battery and a test bulb (40W) as shown in the figure.
3. The function of the rheostat is normal if the intensity of illumination changes smoothly, without flashing or flickering, when the rheostat is operated.