My question is, on my 03 954 while riding at night I notice that when I'm on the throttle the
head light is bright but as soon as I let off it gets dim but just slightly. Just wondering if this is normal
or is my battery getting weak. I did leave the key on for about 10 min. one day and it totaly killed the battery, but never had a problem since..

Thanks

 

Mine does it too. Son't worry about it. It is just the alternator putting out more amps at higher rpm.

 

OK, good that's kinda what I thought but I wasn't 100%..

Thanks

 

That's true about the generator, but it still means a weak battery. The headlight should be the same brightness at all rpms. Could be a poorly functioning regulator.