bmmz, your dealer is absolutely correct. HID and halogen OEM lamps have different housings. This was confirmed by Ford technicians. When converting to HID to do it properly you must also change the housing. There are several posts on that. Here is a copy of a reply I posted in the thread;
http://www.explorerforum.com/forums/showthread.php?t=397670
********************************************************
gwesam, you are absolutely correct about requiring the correct housing to have proper HID lighting.
From;
http://www.danielsternlighting.com/t...nversions.html
HID headlamps are terrific, and they can offer significant and substantial safety performance advantages over halogen headlamps, but only if they're designed and built as HID headlamps from the start. Installing an "HID kit" in a halogen headlamp isn't an upgrade, it's a large and serious safety downgrade.
In Canada, Transport Canada states;
If you wish to have HID headlights on a vehicle that was not originally equipped with them (ie: came from the factory with incandescent bulb headlights)
you must replace the entire headlight assembly, bulbs and lenses, with HID equipment that meet the Motor Vehicle Safety Regulations (used to be CMVSS) Standard 108 and 108.1.
Halogens and HID bulbs have different focal points and the housings for each are designed with that in mind. This difference cannot be corrected by 'aiming' the lights.
Peter