Dakar lights dim with revs

[heineken2]

Hi guys

I recently noticed that whenever I open the throttle on my Dakar, the headlights dim. When I release the throttle or am in range where the bike doesn't pull ( i.e in a gear that is suitable for that speed ) the lights brighten again. This only happens while driving.

Any ideas?

Thanks,
H.

 

[lecap]

 

[Trail Blazer]

 

[heineken2]

 

[Sylvester]

 

[heineken2]