Hey everyone, I'm new to the forum

I just bought a 2009 Express 3500 on Craigslist, and the previous owner was nice enough to include an additional bench seat that power reclines into a small bed (the kind that you'd find in some of the really comfortable 7 passenger vans. He said he had it installed in this van previously, but I believe he had it in the very last row (which I'll be removing to use for storage) and I'll be aiming to put this in the third row.

I've really never been much of a car guy, so I'm just looking for advice/pointers on how to do this. Removing the current bench seats is not problem at all, but I'm not too sure about installing the powered one (especially regarding the electronics).