I have a 2001 5.4 l XLT regular cab. If I buy HID bulbs will they plug in to the factory socket in place of my regular bulbs or do i need to replace it with something else. HID's are new to me any info will greatly be appreciated.

 

you need ballasts, too. the kits come with everything.

 

Ok, HID plug and play kits come with bulbs and ballasts. The factory headlight bulb connector plugs into the ballast and then wires come out of the ballast and go to the bulb.

 

yeah a hid kit is best but you can buy bulps tat go back in the factory place and the give the look of hids but not the brightness