turn signal bulb

[smankow]

recently, the turn signal light (left side) started blinking very quickly.  the manual identified this as a bulb being out.  I removed the headlight assembly, figured out which bulb to change (not exactly identified) and replaced the bulb.  Guess what?  That's right, no change.  The front bulb doesn't work and the rear blinks quickly.

any other suggestions?  My car has Xenon lights and is a 2003 996

Steve