I would like add fog lights to my 2001 TJ (not part of original equipment) and am confused about how to wire it. I bought a switch that can be installed in the dashboard switch panel blank next to the rear wiper and defroster switches but cannot figure out how to wire it. I located two spare wires behind the dash labeled "switched auxiliary power" and "unswitched auxiliary power" but have no idea what to do next. I also see an empty space for a fog lamp relay in the underhood fuse box. Any suggestions?

 

Most accessory lighting only needs power and ground. The question is do you want to be able to run the fog-lights after the ignition is off. Meaning the Jeep is off and the lights stay on. That will tell you which accessory wiring to tap into. The next question is are the fog lights LED? If they are LED the draw is pretty small and you can probably get away with the wires under the dash. If they are not LED then i would run a wire to the fuse box or the battery and that way you won't trip those aux wiring fuses.