Its just those three boards, fit them, connect them up and away you go.
http://www.el-mod.de
If you want to see a few others that I have done, just go to You Tube and type Wibblywobbly1 into the search bar, there are a few different tanks that I have built some vids show how I built them. Plenty of other users on there too, just search on Elmod and they will all be listed.
I also did a website to help anyone with installing them.
http://www.hitenter.co.uk/elmod
Cheers
Rob G