the LED closer to the Tip is your LOW BEAM
when you hit the high beam, that stays ON
while the LED closer to the base also goes on.
Pretty sweet if you ask me and as long as your lenses
are clean and clear, overall results I cant imagine anyone
not really satisfied with a set
The instant on is a nice feature, 1 thing I dont like about
HIDs are they take a minute or so to warm up and be 100%
effective.