I'm not exactly sure what your asking here, but I'm thinking you are asking about running the wires from outside the box to the subs themselves if that is your question just get some terminals like this
http://www.tti-plus.com/Speaker-Box-...ti-bw-pts2.htm
If you paid a lot of money for this box I would recommend trying to get your money back. It is very easy to build a speakerbox I have built 3 of them and at the time I really didn't have much very many carpenter skills. As far as cost I believe the most I spent was $50. And in my opinion each of these boxes looked really great I wouldn't say completely professional because my carpeting skills have not been perfected yet basically around the port there is no real way to keep the carpet down by the port if you build a sealed box there would be no problems. You can spend more because you can buy some really awesome stuff for boxes such as built in handles really nice looking ports and corners and all kinds of stuff.
Another advantage to building your own box is you can build it to your speaker's specs like if it was designed for a ported or sealed box and the cubic feet etc, which in my opinion makes all the difference.
So if I'm understanding you rightyou bought a box without terminals if they slacked on this I imagine the rest of the box is not of terribly high quality. If so do me a favor and try to return the box and PM me and I can walk you through building your own box. I am by no means any expert at all, but my very first system I did was the very best system I ever heard as far as sound quality, probably not the loudest but it was hard on my ears to sit in there with it turned up and the bass did not drown out the treble at all.
On a side note I built 2 boxes for my 4th gen which sounded awesome both of which only had 1 sub and I think was still to much I guess I would recommend going with 1 sub because if you have never done a system before it's easier to set up (as far as wiring going from 4 ohm to 2 ohm etc), it is cheaper because you have one less sub to buy and you can probably get by with a little smaller amp and also you can build a box easier and stay in the speaker's specs size wise. this completely depends on the speaker but I had a cerwin vega that wanted 2 cubic feet which completely filled up my trunk well in my 4th gen. Let me know I would be glad to help
OBJECTS IN MIRROR ARE IMPORTS 
