Some LED bulbs are hard wired, and some are plug-in. The plastic cover may just slide off. Pro tip: have your wife remove the cover. She is much less likely to bust the plastic tabs than you are. Don't ask how I learned this valuable lesson.
Anyway, once you get the cover off, you will know what kind of LED bulb you have. I've had great luck dealing with M4 -- they are a USA-based company, and they actually answer their emails and will answer technical questions. Their bulbs are not the cheapest, but they are high quality:
M4 LED supply
Good luck -- let us know how it goes.
