22-12-15, 11:31 PM
The single filament H1 bulb on the left side is your headlight, that's meant to be on all the time.
For some shit reason the twin filament H4 bulb on the right side is wired for use with either your flasher/pass light button OR high beam only.
The mod that most people do is to make the lower filament stay on all the time as an extra low beam with the H4 bulb.
If the mod hasn't been done then the lower filament of the H4 bulb simply wouldn't ever be used or light up at all.
For some shit reason the twin filament H4 bulb on the right side is wired for use with either your flasher/pass light button OR high beam only.
The mod that most people do is to make the lower filament stay on all the time as an extra low beam with the H4 bulb.
If the mod hasn't been done then the lower filament of the H4 bulb simply wouldn't ever be used or light up at all.
More people are born because of alcohol than will ever die from it.