When I started driving, nationwide it was 6 lights illuminated- 2 parking lights and 4 headlights. The 4 headlights is from back when the high & low beams were actually different housings.
So if you have foglights, parking lights, and 4 headlights, the fog lights must go off when the headlights go to high beam. This keeps you @ 6.
On most vehicles these days, you only have 2 headlights, but they still make the fog lights turn off when you go to high beam as a safety thing to avoid blinding other drivers.
Every vehicle I have owned (about 20 of them), has met the 6 light rule the way it was built. I'm not gonna say it stayed that way.
Based on the 2nd code below, it looks like CT doesn't consider the parking/marker lights as a light in the total count (4).
Connecticut codes:
Sec. 14-96o. Spot lamps. Fog lamps. Auxiliary passing lamps. Auxiliary driving lamps. (a) Any motor vehicle may be equipped with not more than two spot lamps and every lighted spot lamp shall be so aimed and used that no part of the high-intensity portion of the beam will strike the windshield, or any windows, mirror or occupant of another vehicle in use.
(b) Any motor vehicle may be equipped with not more than two fog lamps mounted on the front at a height not less than twelve inches nor more than thirty 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 feet ahead, project higher than a level of four inches below the level of the center of the lamp from which it comes.
(c) Any motor vehicle may be equipped with not more than two auxiliary passing lamps mounted on the front at a height not less than twenty-four inches nor more than forty-two inches above the level surface upon which the vehicle stands. The provisions of section 14-96t shall apply to any combination of head lamps and auxiliary passing lamps.
(d) Any motor vehicle may be equipped with not more than two auxiliary driving lamps mounted on the front at a height not less than sixteen inches nor more than forty-two inches above the level surface upon which the vehicle stands. The provisions of section 14-96t shall apply to any combination of head lamps and auxiliary driving lamps.
(e) Operating a motor vehicle with lamps which do not conform to the provisions of this section shall be an infraction.
Sec. 14-96y. Number of head lamps. Number in combination with other lamps. (a) At all times specified in subsection (a) of section 14-96a, at least two lighted lamps shall be displayed, one on each side at the front of every motor vehicle other than a motorcycle, except when such vehicle is parked subject to the regulations governing lights on parked vehicles.
(b) Whenever a motor vehicle equipped with head lamps as herein required is also equipped with any auxiliary lamps or a spot lamp or any other lamp on the front thereof projecting a beam of intensity greater than three hundred candlepower, not more than a total of four of any such lamps on the front of a vehicle shall be lighted at any one time when upon a highway.
(c) Failure to have lamps as required by this section shall be an infraction.
