The headlights on my 05 Ram are next to useless.
I can upgrade the bulb but that doesn't improve the pattern. Auxillary luights are
not legal in all states, I have been warned about it. A CA state trooper threatened to smash my buddies driving lamps which are legal at home, they weren't on at the time. He was told in no uncertain terms to leave them alone but they had to be unhooked while in the state.
There HAS to be more information than this.
CVC 24402:
(a) Any motor vehicle may be equipped with not to exceed two auxiliary driving lamps mounted on the front at a height of not less than 16 inches nor more than 42 inches. Driving lamps are lamps designed for supplementing the upper beam from headlamps and may not be lighted with the lower beam.
(b) Any motor vehicle may be equipped with not to exceed two auxiliary passing lamps mounted on the front at a height of not less than 24 inches nor more than 42 inches. Passing lamps are lamps designed for supplementing the lower beam from headlamps and may also be lighted with the upper beam.
CVC 24403
(a) A motor vehicle may be equipped with not more than two foglamps that may be used with, but may not be used in substitution of, headlamps.
(b) On a motor vehicle other than a motorcycle, the foglamps authorized under this section shall be mounted on the front at a height of not less than 12 inches nor more than 30 inches and aimed so 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 projects higher than a level of four inches below the level of the center of the lamp from which it comes, for a distance of 25 feet in front of the vehicle.
(c) On a motorcycle, the foglamps authorized under this section shall be mounted on the front at a height of not less than 12 inches nor more than 40 inches and aimed so 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 projects higher than a level of four inches below the level of the center of the lamp from which it comes, for a distance of 25 feet in front of the vehicle.
CVC 24404
(a) A motor vehicle may be equipped with not to exceed two white spotlamps, which shall not be used in substitution of headlamps.
(b) No spotlamp shall be equipped with any lamp source exceeding 32 standard candlepower or 30 watts nor project any glaring light into the eyes of an approaching driver.
(c) Every spotlamp shall be so directed when in use: That no portion of the main substantially parallel beam of light will strike the roadway to the left of the prolongation of the left side line of the vehicle.
That the top of the beam will not strike the roadway at a distance in excess of 300 feet from the vehicle.
(d) This section does not apply to spotlamps on authorized emergency vehicles.
(e) No spotlamp when in use shall be directed so as to illuminate any other moving vehicle.
CVC 24405
(a) Not more than four lamps of the following types showing to the front of a vehicle may be lighted at any one time:
(1) Headlamps.
(2) Auxiliary driving or passing lamps.
(3) Fog lamps.
(4) Warning lamps.
(5) Spot lamps.
(6) Gaseous discharge lamps specified in Section 25258.
(b) For the purpose of this section each pair of a dual headlamp system shall be considered as one lamp.
(c) Subdivision (a) does not apply to any authorized emergency vehicle.
So, you can put whatever you want on the front of your car, so long as there are never more than four forward-facing white lights (six if you have dual lamp!) compliant with these rules illuminated. *Technically* any off-road only lights must be covered.
I've never been hassled for illegal lighting, but I know that plenty of cops don't know the laws. I keep a copy of this section along with appendix g of the emissions test handbook in the glove box. (I *have* been hassled for "illegal equipment" .... they back down when you produce the law.)
I'm not aware of any state that does not have a similar "two aux front lights" rule on the book, but I'm happy to be proven wrong.
So, throw some Hellas on that wagon and see where you're going!