My fuse blew when I put in my HID's, they woudln't work and that was the first place I looked. Blew the CRAP out of my 10 amp fuse. I put 20's in it and never looked back.
It is under the hood right in the middle towards the drivers side. There is one just to the right of it also, the one towards the d side is the d side headlight, the other one is the pass side.
If you need help again, call me, I'll take pics of mine and see if I can help ya out. I'm going offroading, but just hit me up.
08 Cummins Mega Cab, 7" on 37
02 Explorer Sport
08 Brute 750 on 29.5