Section 24252 Of Article 1. General Provisions From California Vehicle Code >> Division 12. >> Chapter 2. >> Article 1.
24252
. (a) All lighting equipment of a required type installed on a
vehicle shall at all times be maintained in good working order.
Lamps shall be equipped with bulbs of the correct voltage rating
corresponding to the nominal voltage at the lamp socket.
(b) The voltage at any tail, stop, license plate, side marker or
clearance lamp socket on a vehicle shall not be less than 85 percent
of the design voltage of the bulb. Voltage tests shall be conducted
with the engine operating.
(c) Two or more lamp or reflector functions may be combined,
provided each function subject to requirements established by the
department meets such requirements.
(1) No turn signal lamp may be combined optically with a stoplamp
unless the stoplamp is extinguished when the turn signal is flashing.
(2) No clearance lamp may be combined optically with any taillamp
or identification lamp.