I just bought a Lowrider Trike and I am building a box for the back which will house a stereo system. I can handle building it but I have no idea how to power the stereo system.

I have some speakers already and I will be getting a tape deck. What will be the cheapest way to power this and the most efficient way? What do I need to buy in order for this to work?

A step by step would be awesome.  Thanks in advance.  

go to radio shack and ask or go to a place that installs systems and they will tell u  

i did that before all you need is a motorcycle battery and maybe an amp or two really just depends but there will be two power wires on the deck i think yellow and red but find the wires run them to the battery and the other 8 wires are for front and back speakers...the speakers you have can either be ran to four of the eight wires (posotive and negative) or you can get an amp and hook it up in the r/c jacks made for subs....let me know how it works out for you send some pics...o and if you plan on having radio statins get a small antenna and hook that all up there is a hook up for that on the deck too...lata  

yo what batteries are good for the system ? kinda small ?