How do I install this to my TV

I do not think i fully understand your problem, do you have a game boy, the hand held system? or larger Gamecube? If it is the small game boy, You do not hook it to your system. there is an adapter that fits in the Super Nintendo System that will hold and Play game boy games. It is called Super BOY.
If it is game cube and has a/v audio/video plug ends, you need a converter from Radio shack that converts those 3 colored wires to the same cable the you use for your cable input to the tv.