Hey, my headlight bulb was burnt out, so I went and got a new one from the dealer. I noticed that that bulb had burnt out too. I bought two more bulbs, and put one in and it was working fine at lower engine speeds, and then when i revved the engine up it got brighter, but then went out too. I'm thinking this could be a bad voltage regulator? Is there any way i can test it? And are there any quick fixes for it? Thanks for any help