Main Beam???

[Steve48]

Hi guys,

Noticed my dipped light was not working the other day so replaced the bulb. It was then that I noticed that whether on dip or main beam only one fillament is on.

The bulb is a 35W / 35W. I therefore assume that on dip there should be one fillament on and then main both should light to give a full 70 watt.

I have put a multimeter accross the 2 wires (+ earth) and this confirms that when your in dip position 12 volt is fed to one wire and in the main position the other wire then becomes 12 volt.

I have a sneaky suspicion that the bulb fitment may be an aftermarket job.

Could someone confirm this please and let me know what is the correct fitment I should have.

Bike is a 2000 XL1200 Sport.

Many thanks.

 

[fin_676]

Only one filament should be on at a time due to the shape of the bulb/reflector/lens you get a different light pattern coming from the light depending on which filament is lit
i personally use a 55w/60w h4 bulb but the 35w doesn't sound like it would be much use on an un lit road


Brian

 

[Steve48]

Thanks Brian,

I have a feeling that I need to change the actual fitment as the H4 bulb is totally different.

 

[fin_676]

just went out to the shed and pulled the headlight on one of the bikes definatley an h4 bulb but my bikes are older 92/93/94 and they all take an h4 in the headlight

Brian