This quick tutorial is just how to put them on your HDD, if you want to do it in case - case modding etc hook the LED's up to your 12v mod if you have done one - I believe that's how its done, correct me if I'm wrong.
Things you need:
- LED's of your choice (will be the color}
- 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.
credits to the creator of the tut ~ followed it myself was easy to follow