they are very easy to install. they are designed to be swappable with the bulbs. there are no splices to be made, no cutting of wires, it is basically a plug and play kit. (I removed the white wiring harnesses for better looks) it took me a total of about 30 minutes at most to install them and aim them. there are no mods to the headlight housing if you ever have to put back in original bulbs. just unplug the hids and put the bulbs back in. Simple. the only difficult thing for me was to mount the ballasts. its kinda tight space on the inner fenders there but there are a few places to do it.
Mike