Dominator Dual Headlight***HELP!*** bulbs keep blowing

[jonathanneely]

So I've blown 3 bulbs in my new dominator dual headlights. Only had em' on a week and a half too. It's not a fuse, just bulbs. The bulbs are two 60/55 and stock is a single 60/55. What's going on here? Currently, just low beam is blown in one of them but both work on high. Earlier both worked on low too. That's what happened before too. First one low beam went out one just one then both lights went out the next day. I'm stumped...

[Paulcet]

Curious.  I haven't had any bulbs blow, except one 'parking' lamp.  Check voltage at 5000 rpm.

[bassmechanicsz]

I don't know if it would cause that many bulbs to blow that quickly but excessive vibration can shorten the life of a headlight bulb.  Is their excessive vibration through the lights?