My driving lights are all sandblasted dull. I've got new Bosch lens and wonder do I have to take the inner plastic off from the fenders to get at the light which seems to be bolted to the inside of the bumper. Is this something a DIY guy can do in the driveway or better left to the dealer to install? Anybody out there who has tackled this task who can give up some pointers? Thanx much.Tchuss