I added 6000K HIDs to the lows (35W) and fogs (55W) and although the colors matched my Halo eyes and LED parking leds, the light output was far too inferior compared to the replacement Osram Narvas I had in my headlights. I therefore 5000K bulbs for both the fog and low and 55w ballast for the low beams. I think 4300 would look way to yellow compared to the leds I have.
I've already had my headlights apart to put in the halo eyes. The HID bulb is surrounded by a lot of aluminum from the projector housing and the projector lense is glass. I am not too worried about the extra heat from the 55w bulbs since there is a lot more dense material inside this headlight to dissipate the heat compared to my other vehicles.
What I am concerned about is the wiring. My halos use a separate circuit (Add a circuit tap) that I installed in the main fusebox and this draw is much less than one amp. I currently use the existing wiring for the fog and low HIDs but I am wondering if I am pulling too many amps for the wiring especially since the low hid power is being pulled from the headlight harness and through the actual headlight inside wiring. I do not want to fry the wiring and make it brittle by overheating it over a long period of time.
What have others done? Rewired and if so how? Adding more "Add a Circuit" connections in the main fuse box will get ugly fast. Can I pull the main fusebox and add some circuits underneath? Seems like a lot of work if it is even possible. Is the standard vehicle wiring sufficient to handle the ballasts directly? If you added a wiring kit with a relay where did you draw the power from? I would be also concerned about pulling all my headlight sources from a single breaker assembly.