Red Red Ex-04 LED Dual Visor Strobe Is this device waterproof? - Yes, (but don't take it diving). What if a light goes out? - Replace the right or left (master or slave) Can I cut the ciggarette lighter off and connect the light directly? - Yes, Make sure (- negative + positive) are correct. Does it save the last flash pattern? - Yes What color is legal for me to use? - General public or Emergency use: Amber or White (AA, WW, AW) Other colors: for official use, depending on your profession, and state requirments