go here http://www.ihumpedurcat.com/ranger
there is a how to in there for it, tho its not overally good, but there are pics and stuff..
I got my set on ebay, inact i went thru two sets already. The truck isnt prewired for the lights, however the switch connector is there behind the dash. I totally by passed it tho. I used 14awg outdoor extension cord. and ensured to leave enuff slack on the front so that if there was ever a problem, i could fix it with the extra wire. This has come in handy since I had 'issues' with the driverside socket for the light, water was getting in and causing it to short. I made custom slpash gaurds to protect the backside of the fog lights, keeps debris being whipped off the front tires from impacting the back side of the fog lights. havent had a problem since.
when u do it, the outside corner where your valance bends around is gonna be a real btch. if ur valance is painted, it might be better to take the valance off and do it that way. I had to detach the valance on both sides and carefully bend the valance out to get the bolt and nut into the right spot of the valance. tho the second set i put in, was alot easier, i cant remember why but i know it was a piece of cake, where as the first time i did it was very frusterating.
the way i did it, allows me to drive with JUST the fog lights on, its nice for sneaking around. However I tried to make a switch to turn my brake lights off to complete the whole 'sneaking around' deal, and ended up breaking some doohicky and then the truck wouldnt come out of park... LOL