Today I replaced the battery power cables, added the missing ground and then installed a new battery that is more appropriate for running the vehicle and will use the deep cycle battery that came with the RV for the coach power requirements. I also cleaned and greased the metal drawers slides and now even with two batteries the whole drawer slides so much more easily.
I also changed out my two lines that come out from the propane regulator and attached them to the brand new 20lb bottles I picked up yesterday. I even used the teflon tape on the fittings!

New battery cables and new RV battery.

Scary old battery cables.

New batteries and cables, still need to secure the batteries to the tray.

New propane regulator and hoses, plus propane.