Only way I remember it is legal on-road is if they are the only main lamps on facing forward and since you cannot legally (or unless you are severely mentally challenged) drive with these lights only at night, it means you can only run them in daylight hours....no fog...no point...disconnect them so your friends with the wicked sense of humour don't hit the switch for you while you're not looking.

Nobody really wants to see a WRX owner running around trying to look like a Falcadore ute owner anyway.