Installing 3rd brake light strobe

[epapp]

Any stoplamp or supplemental stoplamp required or permitted by
Section 24603 may be equipped so as to flash not more than four
times within the first four seconds after actuation by application of
the brakes.

Section 24603 is about taillights and the requirement for them to be RED post 1979. So part C of 25251.5 applies to cars fitted with a third RED brakelight. DGAF, doing this mod. I will surely abide by the '4 times in 4 seconds' however.