Put in some 65 watt 9005 xenon bulbs last night, and they seemed to be working fine. Upon getting into my truck this morning, I turned on my lights and fogs, and found that only the fog lights turned on, not the headlights. When I put my brights on, they headlights will come on, but wont otherwise. Have I blown my headlight fuses?....If so, why do my brights still work? If I have blown them, can I get a heavier duty fuse, or will I need to go back to my original light setup?

 

Unless I'm mistaken, 9005 are single element bulbs.
The Ford F-150 uses the 9007, two element bulbs.

That is why the 9005's only work in the high position.
Who ever sold them to you should have known you need 9007's

 

i am using the 9005 in the fog lights and the 9007 in the headlights

 

After taking out my 9007 headlight bulbs, I found that one of the two filaments located inside the bulbs were broken, the other still intact, which was the one that made the brights work. I put my old halogen headlights in, and they work again. Should I go replace my xenon 9007 or do something different. Also why would this setup blow my headlights, when what should have blown was my fogs, which at 65 watts or most likely too much. Any help is greatly appreiciated.

 

If your fog lights are OE then there should be no relationship. each set of lights should have their own fusable link. Also, there is no way to "force" more current thru a bulb. You may blow a fuse but not a bulb. The only way to blow them other then wear or defect is if you put them on an uncompatable system such as 24 volt or AC. If the bulbs are new, go back to where you got the lights and have them replace them.
If not, now is a good time to consider Silverstars...