I'm thinking about buying some LEDs to increase my visibility and had a couple questions. What voltage is supplied by the bike to the turn signal wiring and can I just splice into the turn signal wires? Using this supplied voltage I just need to keep the total voltage going to each LED less than its rated forward voltage right? I have recently taken physics and understand parallel/series circuits and resistors. I will end up wiring LED's in series since it looks like most only handle around 3V max. I also know to watch out for LEDs w/ a small "viewing" angle. Also I'm on one of the sites and the sizes are as small as 3mm...that's seems really tiny to me. Should I go w/ 5mm?