Spaghetti's have a switch on the board to select sequential or not. (mine are sitting in the box, work keeps gettting in the way of the good projects). I bought the tails, backups and 2 flashers from them. 1 flasher for turns, 1 for emergency. Got the front LED replacement from http://autolumination.com/. (Also uesed them and relamped the dash in LED)