Quote Originally Posted by Tone
I ran 120w bulbs until I got the HIDs and the wires don't even get warm - just use 15a fuses and you'll be fine, Direct wiring as discussed below will make them brighter though. HIDs don't need relays as they are only 35w - do the math.

Stock bulbs are 55w low / 60 high - I'll start sending 15a fuses with them.
I did the math! I was not trying downplay your product or product knowledge I was just suggesting some extra insurance/permormance.

Here is a excerpt from HID forums.

Imagine that we connect the HID ballast directly to where the low beam halogen bulb is connected. Some vehicles might be are able to power up HID systems normally without problems at install time. Most probably, it will not last long. The inrush load can be up to max 13 amps per ballast, compared to 7amps inrush when using halogen. The factory design parameters for headlight curcuit is 7 amps inrush and 4.5 amps continous load. So over time, connectors, multifunction switch, headlight switch, wiring and fuse holders will slowly degrade, beacuse of heat buildup. These components are very time consuming to troubleshoot becuse they are usully well hidden behind dashboards and other wiring looms. Parts easily reaches several hundered dollars. Add 8h labour to that and it becomes obvious that a $50 wiring harness is a cheap insurance.