This mod is so easy, and the results so dramatic, that if you have an HDTV and don't have the components yet, you *have* to do this.
Here is the info I used:
http://nfggames.com/wiki/doku.php?id=av:wii_multi_av_pinout
Materials:
5 #1 paper clips
1 generic component cable (really, any 3 RCA-style cables will do)
7 jumper leads (the wires with alligator clips on either end)
1 small flat head screwdriver
All you have to do is:
1) Pop the gray cover off the Wii end of the A/V cable with the screwdriver
2) Plug the cable into the back of the Wii.
3) Insert paper clips into pin 7, pin 9, pin 11, pin 8, and pin 10.
4) Clip the paper clip in pin 7 to the center of the green component cable - pin 9 goes to the center pin of the blue component cable, and 11 goes to the center pin of the red one.
5) Clip the ground wire already plugged into pin 12 to the "outer" (ground) part of the green component cable. Clip the outer part of the green cable to the outer part of the blue cable and clip the outer part of the blue cable to the outer part of the red cable.
6) Clip the paper clips in pin 8 and pin 10 together.
7) Make sure no metal parts are touching that shouldn't be touching (use some tape to separate if you have to).
Done!
Here is the info I used:
http://nfggames.com/wiki/doku.php?id=av:wii_multi_av_pinout
Materials:
5 #1 paper clips
1 generic component cable (really, any 3 RCA-style cables will do)
7 jumper leads (the wires with alligator clips on either end)
1 small flat head screwdriver
All you have to do is:
1) Pop the gray cover off the Wii end of the A/V cable with the screwdriver
2) Plug the cable into the back of the Wii.
3) Insert paper clips into pin 7, pin 9, pin 11, pin 8, and pin 10.
4) Clip the paper clip in pin 7 to the center of the green component cable - pin 9 goes to the center pin of the blue component cable, and 11 goes to the center pin of the red one.
5) Clip the ground wire already plugged into pin 12 to the "outer" (ground) part of the green component cable. Clip the outer part of the green cable to the outer part of the blue cable and clip the outer part of the blue cable to the outer part of the red cable.
6) Clip the paper clips in pin 8 and pin 10 together.
7) Make sure no metal parts are touching that shouldn't be touching (use some tape to separate if you have to).
Done!