just fitted in the afternoon, really easy to do 
mini-guide
first of all buy a H4 HID conversion kit, for best light take a 4300°K while for best colour 6000°K or 8000°K
for installation I use alcool and scottex for cleaning, a little-crick with 10mm key (I don't know english name, see picture), insulating tape
disconnect battery
disconnect all wires and take out grill and headlights (four 10mm bolts for light, 1 over, 2 on engine side and 1 front under grill)
take out old bulb and take in new HID bulb, it fits exactly the same of old one, you must put all cables and connectors that has HID bulbs in the middle of metallic clip so you can close clip and bulb is fitted, now take the protection rubber and put the same cables/connectors of HID bulb in the centre hole of rubber, you made this with care and patience, hole is little for connectors but at the end all goes with no problems (I fit philips white w5w bulbs and new blinker bulbs also)
now choose a place to fit HID-unit, I found in my Micra on UK driver side a hole in which I put a 10mm bolt like original micra bolts and on UK passenger side I put unit where before there were original air induction tubes/hoses
before fitting units in your engine connect the 3 wires unit-bulb and then fit units
take on your headlights, connect the last two connectors (the 2 original connectors of lights), connect battery, start your engine and illuminate the world
I hope you can understand my little guide, sorry but I speak like a 3 years old child
mini-guide
first of all buy a H4 HID conversion kit, for best light take a 4300°K while for best colour 6000°K or 8000°K
for installation I use alcool and scottex for cleaning, a little-crick with 10mm key (I don't know english name, see picture), insulating tape
disconnect battery
disconnect all wires and take out grill and headlights (four 10mm bolts for light, 1 over, 2 on engine side and 1 front under grill)
take out old bulb and take in new HID bulb, it fits exactly the same of old one, you must put all cables and connectors that has HID bulbs in the middle of metallic clip so you can close clip and bulb is fitted, now take the protection rubber and put the same cables/connectors of HID bulb in the centre hole of rubber, you made this with care and patience, hole is little for connectors but at the end all goes with no problems (I fit philips white w5w bulbs and new blinker bulbs also)
now choose a place to fit HID-unit, I found in my Micra on UK driver side a hole in which I put a 10mm bolt like original micra bolts and on UK passenger side I put unit where before there were original air induction tubes/hoses
before fitting units in your engine connect the 3 wires unit-bulb and then fit units
take on your headlights, connect the last two connectors (the 2 original connectors of lights), connect battery, start your engine and illuminate the world
I hope you can understand my little guide, sorry but I speak like a 3 years old child
