actually it's on the earlier models i believe. i have the 94 integra and it alternates when my lights are on. my friend has the 00 integ and the side one doesn't blink at all. i've only noticed the alternating on cars with the 94-97 bumpers. but when i got my car back from wings west, my side ones didn't turn on at all. never really bothered to check if the bulbs burnt out....kinda wondering what they did if both corners burnt out.