I found this bottle of "Household GOOP" lying around the house. It says "Contact Adhesive and Sealant" on the label, so I instantly thought it was the perfect candidate for the job. It's also waterproof, just in case you want to submerse your hard drive. USE IN A WELL VENTILATED AREA.
I took this stuff and spread it around the edge of the cut I had made in the cover, it went on quite nice, and it blends in with the drive cause it's see through.


I stuck my sheet of Lexan on top and it created a tight seal. I left it to dry for about 40 minutes. I then took the hard drive and put the cover on to check the fit.

The next step was the lighting. I had originally put a ultra bright blue LED in there, but unfortunately, the AT PSU I tested the unit on actually put out about 5.8 Volts on the 5V line. This fried the LED. I took a 12V lamp I had and wired it up. If you plan on using a LED, you will need a resistor. A LED is recommended since it emits little to no heat. The lamp was used mainly because it was readily available in the house.


It fit perfectly in the space that was free. (Don't worry, that dust is on the outside of the drive) The wires I used were very small (24G) so I did not have to worry about cutting a hole in the end to accommodate them, as the foam seal around the drive did a good job. Now here's the part you have all been waiting for: The finished product:


So all powered up, the lights come on, and it looks marvelous. The orange/red lamp did a much better job of lighting the drive than I thought it would. As for the drive still working, I stuck it in my rig, booted up, and it detected fine. Booted to Windows, ran scandisk and did a surface scan, a total of 0 bad sectors. Pretty good considering my working environment. Now see all that dirt on my desk? That would be from the hole cutting. Don't worry, none of it got in the drive.
Final Thoughts:
Overall I am extremely pleased with this mod, it turned out much better than I expected it would, and the drive still works! The time it takes and the effort I put in are way worth the outcome.
Have fun people, and remember, keep on modding!