[Rwillia4]

It is not the fuse they only work or don't work. It could be the connection on the back of the fuse.
I would guess your problem is not in the car but under the hood where the hid componets are. I installed HIDs on my car (and love them). The original wire harness needs to be adjusted to get it to work. For my kit I had to pull the high beam wires out of the harness to get the HID mirror to flip up for hi beams soem kit have a halogen hi and HID low so you will need to see what you have.
All kits require a ground. Mine is up near the radaitor. To me the progressively less functioning lights sounds like a ground wire slowly giving up. The easiest way to begin to isolate the problem is to get a multimeter and test to see if you have power at the ballest (little black box near the headlights). If you have power there then the problem is not in the stock system but somewhere past this point.