who's running the conversion headlight with replaceable bulbs. are they worh it.

i saw these;(below) they have glass lenses ( i would have to change to reg clear bulbs) why do they need to be wired to turn sigs or parking lamps.

any info would be appreciated
thanks
shane
5001/ 5006 HALO EURO XENON CONVERSION KIT 5 3/4" 4pc


This is a 5001/5006 Halo low/high beam conversion kit

This kit features:

4 5 3/4" Diamond cut sealed beam conversion housings with Halo's
4 H4 Xenon HID bulbs rated at 65/55 Watts, with an output of 90/100 Watts
4 rubber covers (to keep the housings dry)
Headlights are plug and play, no rewiring is necessary
Glass Lenses
Euro Sytle Lenses
50% Brighter than stock
Halo's will need to be wired in to either parking lights, turn signals, or to a seperate switch