droth33 – If you feel up to the task you will be amazed at the difference an HID upgrade makes on the Edge. As others have mentioned, the Edge already has a projector style housing which appears to be identical to the housing the Ford uses with their factory HID option.
I ordered the TRS Morimoto 9012 kit with 35-watt ballasts and 5000k bulbs. In perhaps an over abundance of caution I also ordered the relay harness. I only recently noticed that they sent me 55-watt ballasts. After reading candurin’s description of the 55-watt system, I am glad that they did. In hindsight they probably thought I wanted the 55-watt system since I had sprung for the relay.
I mounted the ballasts behind the headlights using the bracket that came with the kit. The relay is mounted on an existing bolt on the firewall. Cover up the wiring with some black plastic split wire loom and you will have a very clean installation.
One further note about the TRS kit, even though they advertise a 9012 kit it ships with a 9006 bulb. This was not a surprise as no one makes a 9012 HID bulb. The passenger side bulb installed without a problem. I struggled with the driver’s side bulb for about 30 minutes before I finally held the HID bulb side by side with the 9012 halogen bulb and realized the slight difference in the mounting flange. 20 seconds of trimming with a Dremel tool solved the problem and the bulb installed without a hitch. If you don’t have a Dremel you could probably make due with a razor knife, just don’t cut your finger off.
With the bulbs properly seated there was no aiming adjustment required. I have nice bright factory looking HID’s and no one has ever flashed at me thinking that my brights were on.
Once you have this project under your belt you could spring for a pair of Dan’s DRL’s and have a transformed Edge with state of the art lights.