I Had The Same Difficultly With My 2008 Crossfire Last Year. The Problem Was The Bulbs--- I Don't Remember The Specific Manufacturer But Bulbs Have A Great Tendency Of Blowing Out Prematurely. I Do Remember I Read The Answer Some Where On The Forum. I Got New Bulbs At Napa Autoparts ( Don't Remember The New Brand), But Have Had No Problemes Since. In Actuality,--- The Forum Had A Posting Which Gave Me All The Information For The Bulbs And Also Showed Me How To Replace The Bulbs In A Convertible Without Removing The Interior Portions Of The Trunk.