My brother had this issue with his '01 Tundra (or something along the lines of this issue).
He wanted fogs and had openings for them in his bumper so he bought a set of OEM foglights for a '01 Tundra and a generic fog light wiring kit from Pep Boys. The wiring kit comes with a fuse and relay and plenty of wire to run to wherever you need as well as crimps and connectors, etc. We wired it all up and it works perfectly.
He used the switch that came with the wiring kit but you'll probably want to use the stock one for yours. Google basic switches and you should be able to figure out how to hook it up. Either that or hit me up with a pic of the bottom of the switch and i'll see what I can do.

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Black 2005 Mustang v6, 5 speed, IUP, EUP and Leather.
Razzi 1/4 window scoops, Mustang GT Sway Bars, Flowmaster American Thunder Single Exhaust, Clear Front Turn Signal Lenses, Demolet CAI, X-cal2 91 tune, Hurst Comp/Plus Shifter, FRPP T-Lock, Ford 3.73 gears