There is a high likelihood that the lights that you want to install are not road legal and will blind oncoming traffic. Please be sure that your lights are road legal and compliant with your state laws.
As for fog lights, I have several vehicles with factory fog lights and have found them to be essentially useless. I can't even tell if they are on without turning off the headlamps. Their range is so short that they wouldn't do me any good over 20mph.
Idaho lighting laws:
49-918. SPOT LAMPS AND AUXILIARY LAMPS. (1) Any motor vehicle may be
equipped with not more than two (2) spot lamps, and each lighted spot lamp
shall be so aimed and used upon approaching another vehicle that no part of
the high-intensity portion of the beam will be directed to the left of the
prolongation of the extreme left side of the vehicle nor more than one hundred (100) feet ahead of the vehicle.
(2) Any motor vehicle may be equipped with not more than two (2) fog
lamps mounted on the front, at a height not less than twelve (12) inches nor
more than thirty (30) inches above the level surface upon which the vehicle
stands, and so aimed that when the vehicle is not loaded none of the high-intensity portion of the light to the left of the center of the vehicle shall
at a distance of twenty-five (25) feet ahead project higher than a level of
four (4) inches below the level of the center of the lamp from which it comes.
Lighted fog lamps meeting these requirements may be used with lower head lamp
beams as specified in section 49-922(2), Idaho Code.
(3) Any motor vehicle may be equipped with not more than two (2) auxiliary passing lamps mounted on the front at a height not less than twentyfour (24) inches nor more than forty-two (42) inches above the level surface
upon which the vehicle stands. The provisions of section 49-922, Idaho Code,
shall apply to any combination of head lamps and auxiliary passing lamps.
(4) Any motor vehicle may be equipped with not more than two (2) auxiliary driving lamps mounted on the front at a height not less than sixteen (16)
inches nor more than forty-two (42) inches above the level surface upon which
the vehicle stands. The provisions of section 49-922, Idaho Code, shall apply to any combination of head lamps and auxiliary driving lamps.
Idaho vehicle lighting