State of California Lift & Lighting Laws

24008.5.  (a) No person shall operate any motor vehicle with a frame
height or body floor height greater than specified in subdivisions
(b) and (c).
   (b) The maximum frame height is as follows:
        Vehicle Type                        Frame Height
        (1) Passenger vehicles, except
            housecars ......................   23 inches
        (2) All other motor vehicles,
            including housecars, as follows:
            Up to 4,500 pounds GVWR ........   27 inches
            4,501 to 7,500 pounds GVWR .....   30 inches
            7,501 to 10,000 pounds GVWR ....   31 inches
   (c) The lowest portion of the body floor shall not be more than
five inches above the top of the frame.
   (d) The following definitions govern the construction of this
section:
   (1) "Frame" means the main longitudinal structural members of the
chassis of the vehicle or, for vehicles with unitized body
construction, the lowest main longitudinal structural members of the
body of the vehicle.
   (2) "Frame height" means the vertical distance between the ground
and the lowest point on the frame, measured when the vehicle is
unladen on a level surface at the lowest point on the frame midway
between the front axle and the second axle on the vehicle.
   (3) "GVWR" means the manufacturer's gross vehicle weight rating,
as defined in Section 390, whether or not the vehicle is modified by
use of parts not originally installed by the manufacturer.

24400.  During darkness, every motor vehicle other than a
motorcycle, shall be equipped with at least two lighted headlamps,
with at least one on each side of the front of the vehicle, and,
except as to vehicles registered prior to January 1, 1930, they shall
be located directly above or in advance of the front axle of the
vehicle.  The headlamps and every light source in any headlamp unit
shall be located at a height of not more than 54 inches nor less than
22 inches.

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.

24403.  Any motor vehicle may be equipped with not to exceed two
foglamps which may be used with, but shall not be used in
substitution of, headlamps.  Foglamps shall be mounted on the front
at a height of not less than 12 inches nor more than 30 inches 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 25 feet ahead project higher than a level of four
inches below the level of the center of the lamp from which it comes.

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.

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.

24411.  Notwithstanding any other provision of law, a vehicle may be
equipped with not more than eight lamps for use as headlamps while
the vehicle is operated or driven off the highway.  The lamps shall
be mounted at a height of not less than 16 inches from the ground, or
more than 12 inches above the top of the passenger compartment, at
any place between the front of the vehicle and a line lying on a
point 40 inches to the rear of the seat occupied by the driver, shall
be wired independently of all other lighting circuits, and, whenever
the vehicle is operated or driven upon a highway, shall be covered
or hooded with an opaque hood or cover, and turned off.

27600.  No person shall operate any motor vehicle having three or
more wheels, any trailer, or semitrailer unless equipped with
fenders, covers, or devices, including flaps or splash aprons, or
unless the body of the vehicle or attachments thereto afford adequate
protection to effectively minimize the spray or splash of water or
mud to the rear of the vehicle and all such equipment or such body or
attachments thereto shall be at least as wide as the tire tread.
This section does not apply to those vehicles exempt from
registration, trailers and semitrailers having an unladen weight of
under 1,500 pounds, or any vehicles manufactured and first registered
prior to January 1, 1971, having an unladen weight of under 1,500
pounds.

Source:  http://www.leginfo.ca.gov/