I didn't meddle with the wiring at all and it works just fine. I didn't have any problems hiding the wiring away. As to the headlight fitments, not sure why a few of you had to modify the stock headlight casing, I surely didn't and it fit perfectly with the slim ballast bulb. Unsure why yours seem to be different since there should be no mod needed to do this upgrade.
You surely miss lead people when you say you didn't modify the back headlight housing & you never mention what kind of bulb you have????
if you have the BI XENON hi/low it will definitely jam against the back of the housing, BUT if you have a single intensity H4 ( low beam only) then you are correct not having to modify the housing since the bulb is not too long at the back.
unless you are not aware of the bulb jamming the back of the headlight housing or you didn't need to adjust the aim of your headlight the bulb is jamming against the housing if it is Bi xenon H4 bulb.
Now when you say "slim ballast bulb" there is NO such thing at all, what is slim is the BALLAST not the bulb.
can you please clarify or at least stop miss leading people.
there are 4 typs of H4 HID bulbs (H4-1, H4-2, H4-3 bixenon, Dual H4-4 xenon) which one do you have?
1- the H4-1 is a single intensity low beam.
2- The H4-2 has a xenon low & a hallogen hi beams.
3- The H4 bixenon has hi & low, it requires cutting the headlight housing to accomodate the bulb deapth.
4- The H4-4 has two seperate bulbs fused together & uses two seperate ballasts