Headlight idot light

[nate]

The idiot light for the head light comes on when the low beam is on.but goes out when flipped to high beam.Does this mean i just need to replace the headlight or is it a wire issue?1980 xs1100g

[John]

The idiot light is doing it's job

It lights up to tell you that the low beam filament is out, and that it has turned on the high beam at a decreased brilliance (voltage). When you switch to high beam, the lamp gets full voltage, and will appear normal. You need to replace the headlight bulb. It is an H4 bulb.

[nate]

Thank you thats what i was hoping didn't really feel like playing with wires.