Can anyone give any hints on what you have to do to change the foglight bulbs on 04 Legacy GT Wagon. Thanks

If it's anything like my '02 GT Wagon then do this:

 

Drive the car onto ramps elevating the front of the car.

The lower plastic cover/inner fender well cover can be moved out of the way by removing the lower plastic fastener located behind the front air flap closest to the outside of the car. (No need to remove the flap)

Remove the metal screw holding the inside the cover on, located behind the front wheel toward the front of the car.

 

With this, I was able to move the lower plastic cover/fender liner out of the way enough to remove the bulb from the back of the foglight and replace it.

 

Good luck.