What was the process of placing the bulb into the existing housing? just screw it in?
My upgrades were always bulb only too and it's very easy to take the old bulb out and put the new one in. Just took 2 Phillips screws in my case and about 3 minutes of work.
In most cases, there's no need to buy a new enclosure for the bulb as well unless you've somehow mangled yours. Just take a look at the one you have now before ordering to make sure you can see how it comes apart. As long as it's easy to do, just order the bulb.
Jason
