I added a 2nd battery
under the passenger side front dinette seat, in front of the access port cabinet. It's closed off from items in that access cabinet, yet accessable by lifting the cushion and seat. I installed a fuse and manual shutoff switch then ran number 8 wire inside the front panel wall across to the converter, and paralleled the other existing battery
line. The battery
box is fastened with nylon rope through the wall of the cabinet.
Since I installed an Xantrex Link 20 monitoring system, I had to rewire the existing battery on the tongue to number 8 wire and isolate the tap-offs so the lines came back to the converter, where both battery grounds go through a dual negative line meter shunt. The battery on that side even helps to balance the weight
better, as the fridge
and black tank are on the other side. It's been like that for a complete season and seems to work fine.
The converter is a Progressive Dynamics Inteli-power PD-9260 with the Charge Wizard.
17 is a 1993 CB version.