This is a terrific idea and one that needs some pictures depicting it to fully provide the what to where fore and how is's LOL
I can appreciate that second battery and the Anderson connector idea. That connector is how my winch was originally setup from the folks I purchased it from on a portable mount to go onto a ball for towing or into a reciever either or was the idea they had. It had a long cable with connectors similar to jumper cables and anderson connector at the winch.
Now it's all setup permanent, however you have me re-thinking my rear winch option, as I've been set on the MOUNTED setup similar to the front but this may be a more well rounded idea....maybe I can mount to rear and have a quick connect mount and the Anderson connectors...Hmm..got me thinking!
Thanks for that I love to have ideas floating around...