Were do i connect the wires on my pontoon boat ?

I'm building a pontoon boat and i need to know were i need to connect the wire to on there. From the steering wheel and other electrics I'm putting on there. i wont to make it a party boat. that's two stories. |||To the equipment and the engine%26gt; Battery%26gt; Included %26amp; No Grounds to be connected to the floats If aluminum%26gt;|||Was there any particular wire you had in mind to connect?|||You should tell us what part of the country you will be boating (partying) in so we can avoid the area.