Sorry, Kevin. I don’t know much about the standard wiring for Kent models. If you don’t get an answer here, you might also try posting on the Yahoo group.
As far as battery switches/disconnects go, there are typically two types of connections in an RV. The first is a charging relay or isolator. This allows the alternator to charge the house batteries, but doesn’t allow the house batteries to drain the starting battery. Then you may also have an on/off or combiner switch. These allow you to select one battery bank or another, combine them both or turn them both off.
A simple battery disconnect is very easy to install. I use one from Blue Sea Systems that allows for a remote dash switch. Here’s a link: https://www.bluesea.com/products/7700/ML-RBS_Remote_Battery_Switch_with_Manual_Control_-_12V_DC_500A there are much cheaper options out there though.