arduino 4wd mobile platform

Hi guys. I just bought a 4wd mobile platform for my arduino, but I am having some trouble constructing it. I finished writing the code and building most of it, but I need help configuring the switch and ac adapter with the rest of the robot. The platform itself can be found here:

The tutorials do not go in depth as to wiring the switch, and do not even talk about the adapter at all.

Thanks for your help!

An AC adapter is going to limit your range, isn't it?

A google search like below might provide info.