Just purchase the after market fog lights and disconnect and cut the connectors from the factory lights....attach them to the new lights using the proper connectors and tape with electrical tape and reconnect..
There is a complete walk through with pictures on how to change the front bearings on a 2003 Ford Explorer on my site: http://conceptxchange.wordpress.com/2011/06/23/changing-the-front-hub-assembly-on-a-2003-ford-explorer/
Someone can find information on how to replace a Ford Explorer's headlight assembly by visiting a Ford dealership service department. There, they will have training technicians that can easily replace the assembly.
The best way it to take your Ford Explorer to the nearest Ford Dealer. He will doubtless employ mechanics who will be glad to replace the headlight assembly.
they are part of the hub assembly
You will have to replace the complete window regulator assembly.
Replace the complete halfshaft assembly, it is much easier than trying to replace the cv joint itself.
Remove inner door panel and replace complete door check assembly
take the complete headlight assembly loose or out to get to the bulb.
pull the complete headlight assembly out and then you can get to the build in the back of the headlight.
Open hood, there will be 2 black metal slide locks in the back of the light assembly. After that, work the light assembly out the front, disconnect the plug and change out the light.
The complete assembly comes off by removing 4ea screws on the outside. Then remove the small plate on the rear of the assembly to get to the bulb.
You will need to take the complete headlight assembly loose or out to get to the bulb to change it.