The rear carpet things are easy to get in.. You just need to slide the top of it up behind the plastic and then back down so the little tabs on the bottom lock into place..

As for your problems with the lights, it doesn't sound good and I don't think it would be fuse related. If it was, you'd have experienced a blown fuse and nothing would work. This actually happened to me during install of my HIDs.. but once a fuse goes, it goes.. it doesn't go on and off intermitently. You should bring it back to the guy who installed the HIDs again. Something is wrong.. usually those green lights flicker and dim for an instant when I turn on my HIDs and then they come right back to full power.

The thing with HIDs is that for the first few seconds you turn them on, they draw higher wattages than your normal headlight bulbs. Your normal headlight bulbs are 55w. HIDs run at 35W but go as high as 85 when first turned on.. then slowly go down to 35W over a few seconds. It seems to me that something is wrong with the wiring or something. Did you get a quality HID kit or some cheap one? That could explain it too. Some places sell a cheap imitation HID kit that includes cheap xenon bulbs and a 'power booster' that draws more wattage out of the headlight wiring than it's designed for. These fake xenon kits then use the extra drawn power to attempt to make the fake xenon bulb brighter and more HID looking than it could actually be otherwise.

So bottom line.. did you get a real quality HID kit, a cheapo HID kit, a fake HID kit, or just some xenon bulbs? How much did you pay? Please expand.