Top job, I use one of these also, but my installation is nothing like as neat as yours!

Brewers Whoop - Yes it is as simple as that, if you look at the first picture of the Centech fuse box you will see at the top and bottom two black plastic rails with flat headed screws in them, these are the terminals. All you do to wire something into the box is strip of the ends of the wires and insert the positive wire into the top (on the photo) rail and the negative into the bottom one.