Wii Internal Memory Card Mod

You will need:

• Nintendo Wii Console
  
• Gamecube memory card
• Triwing Screwdriver
• Phillips Screwdriver
• Some good thin wire
• Soldering Iron
• Solder
• Wire Cutters
• Electrical Tape or similar

Guide:

1. Take apart your Gamecube memory card. Official cards have 2 or more triwing screws on the back, possibly covered by a label. I used an unofficial 8MB "4gamers" memory card which used two small philips screws on the back.
   
2. Once the screws are removed, carefully slide the plastic up to expose the memory card's circuit board, then remove the circuit board from the plastic casing.
   
3. Cut 12 lengths of 5cm (2") wire and strip 1mm from each end. I used multicore, 1mm diameter wire, but most wire types will do as long as they are small enough. If you are using multicore, make sure to twist the cores together and tin them, to avoid shorts.
4. Add a small amount of solder on to each of the large pads at the end of the memory cards. The solder should pool nicely on to each pad. You can see the solder added to the pads on the next picture.
5. Solder a wire onto each of these pads. I personally found it best to tape the memory card board to the table to stop it from moving around while soldering.
   
   
6. Carefully take apart your Wii, all the way down to removing the motherboard from the base. Don’t worry about removing the Bluetooth or wireless modules. You will need access to the underside of the motherboard you it is necessary to remove the heat sink. I used the following guide to make sure I took it apart correctly: http://www.informit.com/articles/art...?p=677908&rl=1
   
7. Now solder the other end of each of these wires to the corresponding point on the motherboard. Geepee thankfully already drew out a nice diagram for this, and I checked that it was correct using my multimeter. Click the diagram to enlarge it.
   
   
   I added a little extra solder to each pin to help my wires stick. Here's what mine looked like for reference:
   
   
8. Cover the back of the memory card with electrical tape, then place the memory card in the middle of the 4 heatsink screws (make sure it is in the middle so not to block the screw holes).
   
9. Tape the memory card in place with some more electrical tape. I also taped over my soldering on the board just to be safe. You could use hot glue to attach the memory card securely, but electrical tape has the nice property of holding the memory card in place and also preventing shorts.
   
   
10. Finally put your wii back together and test. I recommend testing your memory card before completely reassembling your Wii, just in case there were any problems. I tested mine by going into the memory card management screen on the Wii's settings, and verifying my savegames were showing up.

Tips + Troubleshooting

• Check for solder bridges after soldering
• Cover the soldered area with electrical tape to stop shorts
• If you wish to use an external memory card in slot one, then the simplest way to do this may be to add a switch between the +5v pin on the memory card and the motherboard. I have not personally tried this myself but I think it should work.
• You can add an internal memory card to slot 2 in the same way, but it is probably best to keep slot 2 free for copying files to/from your internal card.