Kev,
I purchased a 15w Battery Tender. It comes with a quick disconnect that I connected to the house batteries and run the cord in the door and lay it on the dash when in storage. Seems to be working and it takes just a few minutes to connect and disconnect. For the chassis battery, I used a Battery Tender 5w with alligator clips. you can purchase extension cables if you need them.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Thor Forums
