Sounds like you have to change the Intelligent Power Distribution Module (IPDM) or possibly your Body control Module (BCM). I believe both of these are found under the hood in/under your battery compartment. If the car still runs your Engine Control Module (ECM) is probably fine.
05 FX35, Silverstone, Graphite, Touring, Escutcheon, Sport Pedals, LED Dtrl's(thanks rookie), Stillen STB, +2 Timing, Stillen CAI, LMS Z-Tube, Grrrowwl!!, Plenum is next (OK - well - actually the G35 E-brake pedal is next, but I swear, something is going to happen with that plenum).