i've seen a few videos of gamegears with RGB and master system control mods done on youtube....i can't find a how to or even a circuit chart to see how to do it myself....can anyone help with my search? cuz this is a cool mod...

The best place to check would probably be the benheck forums.

I know there is an LED mod on the Benheck forums which greatly increases the battery life, but I don't remember a RGB or MSysytem mod.

I would probably check this thread as well. If you can't find what you need, there are a ton of sega tech heads over there who could help you.
http://www.sega-16.com/forum/foru...

I 2nd Sega-16.com

What is a Master System control mod?

watch it....i want this

^^lol...I know that guy. Need me to ask 'm about it?

Would be a nice port for player 2. The Master system Dpad was terrible, and so was the joystick. Would be good for a Genny controller though.

sure ask him to post a how to video....

Trust me when I say this is a little more complicated then a video can explain. (you have to build a pretty big circuit)