I wanted to have a battery to run things off when the engine isn't running.
I have a 2000 MV.
I sourced the largest batter that would fit under the seat- barely!
I have to take the little plastic piece on the front of the seat base out and cut the carpet out.
It wouldn't fit the other direction, since the seat runner mechanism would foul the battery.
(sorry for the crappy pic)
I used an isolator that can also be overridden to use the house batt as a booster.
I wired up a USB outlet in the seat base- I haven't had time to do a good wiring job for more stuff yet.
I would like to bypass most if not all the Cigar lighter outlets and fluorescent lamp to run on this battery.
I'll have to do some looking at the wiring diagram to figure that out.