Items needed:
* LED's of your choice
* Wire
* Hot glue gun
* A Soldering Iron
* Solder
Step 1: Take apart the HDD
Step 2: Take out the HDD cables
Step 3: The wires we will be modifying are the yellow and black cables
Step 4: Strip a small section of the Yellow (5v) and Black (Ground) wire
Step 5: Solder all the leds to the wires you have.
Step 6: Solder a wire to the Yellow and Black wire and hot glue it to the side of the case.
Step 7: Hot glue all the leds in the spots you would like them to be
Step 8: Solder all the wires and leds together. Make sure that each led is attached to a wire coming from the yellow wire, and the other part of the led coming from the black wire. then reassemble your case.
The Credit Goes To punkskater2448 on Seven Sins :thumbsup:
ORIGINAL LINK WITH PICS How to install lights in HDD - Se7enSins Forums