Back to the electrical system for awhile. 4 gauge cable run from chassis battery to Blue Sea 7610 and 80 amp breaker on opposite side.
It looks like much smaller gauge wire running out of the breaker towards the coach battery but it's actually just smaller shielded 4 gauge.
For this van I chose to mount the house battery on the left side frame. I recently found a diesel heater with it's own 7l tank. I'm going to mount it under the left rear and I picked up an SMEV stove but I'm not going to mount a big propane tank for just a stove. I'll get creative there. 4d on the frame on the left has an advantage or two since my small power system will be just behind the driver's seat. I have very short runs of wire from the front and from my solar on the left side of the roof.
I coated the battery box in POR15 which will match a significant amount of the underside of the van that I'm about to coat. To say this battery box is bomber is an understatement. I had some 3/16" scrap. It weighs almost as much as the battery!
I went with a lead acid 4d that was on sale at BatteriesNBulbs. The Duracell Ultras are made by East Penn/Deka and pretty impressive for a lead acid. It should be plenty.
When mounted the battery looks a little low but I left enough room to check cables and even attach/remove if necessary. It's no fun to wrestle a 4d under a van so I left a little more room than on previous boxes I've built. It's only an inch or two under the tank and if I had sliders/steps on the van it would be well above them.
An interesting challenge on mounting a battery on the left side is the e-brake cable. I spaced the box out with some grade 8 washers to give it a place to still work properly, rolling over the washers. Pedal feel is unchanged.
Time for a Christmas break. Solar and 4x conversion coming up next!