ok Bill when i get a chance I'll take pics of the inside of the box....meanwhile Gary many years ago turned my on to using harnesses for all my wires using this wire wrap..and cutting all cables exactly the right lengths also....all velcroed into the box with "V" slots on the sides so you can close the top.

http://comingsoon.radioshack.com/10-ft-3-8-spiral-cable-wrap/2781638.html#.Vau2jvlViko