Someone on the board mentioned they had backlights in their door vent panels. I assume this is to illuminate the thumbwheel open (0) and shut (-) positions similiar to the lights behind the vent controls on the center dash. I thought I had all my lights working but these controls don't light up (the window and locking switches lights are all ok). I looked in the repair manual but I can't see any reference to these lights. Are mine just burned out or are there, in fact, backlights for these controls?? Thanks for any input.