Leisure battery and main battery supplying radio

[Affray]

Well fair play to connects2, I sent them an email in regards it all, and they came back with, we make a product to resolve the issue, but as your method works, then heck just go with it and skip the product. Honestly didn’t expect a reply.

Products here for future reference to anyone

https://connects2.com/Product/ProductItem/CT54-09