My first question is whats the difference?! I know Bi-Xenon has to do something with the High Beams and Low Beams but can someone explain it to me? My second question is, i've been lookin all over the web for a Bi-Xenon kit for my sisters 03 BMW 325I and the only place that actually offers what i want is bekkers.com, i've been hearing about people that get the Bi-Xenon kit and there high beams not working? So if i buy the Bi-Xenon kit from Bekkers my high beams will not work at all? My last question is Bekkers Bi-Xenon Kit are they plug and play?