Modifying compartment to hold 6v battery
Bobman, I agree that at least two batteries are needed. To solve this issue, my neighbor looked at the compartment to the right of the battery tray. He (a very talented contractor and fellow camper) found a hatch cover for the living room slide on the top left side of this compartment. He removed the cover and besides seeing the slide motor, we could see the frame that the floor sits on. To strengthen the compartment so it could hold at least one or more 6v batteries, he drill a hole into the frame so a 5/8 threaded rod could be bolted to the frame (nuts and flat washers on top of the frame and just below to "sandwich" the frame and top of the compartment). Next, he put 3/4 plywood on the floor of the compartment (two pieces so it could get thru the compartment door). Then he drilled straight down from the hole in the frame into the plywood and compartment floor. Again using two sets of nuts and washers, he sandwiched the plywood and compartment floor. An slotted angle iron was bolted with the nut and washer underneath the compartment. The angle iron went across the bottom of the compartment from left to right. Next, the process was repeated for a second threaded rod. It was run vertically about one foot to the right of the first rod. So the two rods support the compartment floor by hanging down from the frame. I have placed one 6v battery in this strengthened compartment and the other one fits (Trojan 105) in the battery tray. I have space for two more batteries if I need them. I got vents from Home ard and the other facing towards the back of the MH. I will try to post some pics here. this is not as complicated as it sounds. The slide motor hatch cover was replaced with a small notch for the first threaded rod. The top of the threaded rod has enough clearance so that it doesn't interfere with the operation of the slide.
2016 Greyhawk 29MV
Wherever you go, there you are!