I think the fog lights are run through the TIPM module like the head lights are now. They did the head lights this way so the dash can inform you if you have a blow head light. I looked for this as well for adding lights & did not find any fuses for the head light or fog lights. Dealer may have to reset the TIPM with a scan tool. If im wrong sorry sure someone will correct me.
2006 ST,QC,4X4,LB,Jake brake,ultralinings bed liner,air lift air bags,988s,Toyo MT 295/70/17