Onboard battery chargers

[Rinkerguy104]

I have a 97 Rinker 240. It comes with a Pro Charge Guest 2815 charger. This charger is on the brink. How do I wire up a charger such as the Noco Gen Pro 10 x 2? I want it to get it power from the shore power system. It a 30 amp system and I'm using two batteries. The Noco charger is made to plug into a 110 receptical.
I just noticed 3 bank chargers are cheaper on Amazon. Is it because 2 bank is more common?

 

[Scott Danforth]

The Noco comes with instructions