FYI
I purchased my OEM foglights from a member on here a couple weeks ago. I cut out the holes, and used some hardware from Lowes to attach them. The stock bumper has 4 holes where the bracket will mount to. Each bulb has a positive side, and a ground side. I grounded the lights on the frame rail. Then ran one power wire into a scotch lock with the other power lead, then ran that to a rocker switch in the cabin. Found a hot lead on the fuse box under the dash. I placed the LED rocker underneath my cargo light switch. Ill get some pictures this weekend of the install.
If you wanted your fogs to turn on with your parking lamps, you would just need to play with a test light. Follow the wiring from the factory light switch. Find the wire that is hot with the foglamps on, then use a scotch lock to pull power from.