My TV only has one RCA input, but I have 4 devices that use RCA. I didn't want to buy parts to build a switch box or buy one, so I came up with this. It is a really easy project to do, it was free for me because I had the spare parts laying around, and it took me about 20 minutes.
NOTE: Turning on more than one device at a time might cause problems, I'm not responsible if anything gets ruined. I doubt it would cause problems, but I wouldn't try it.
Step 1: Materials
-Spare RCA cables
-wire cutters/ wire strippers
Step 2: Start strippin'
Cut the RCA cords you need and strip them. This part was actually the most time consuming for me.
Step 3: Connecting
Now just match the colors (red to red, white to white, yellow to yellow) and the ground wires. Once all the wires are connected together, wrap with electrical tape. Just plug in your RCA devices and the TV and your all done. (:
Step 4: Videos
I took 2 vids of me trying it out. My DVD player, Nintendo 64, and Playstation 2 are all hooked up to it and they all worked. Sorry they aren't good quality, I took them with my phone.