Best place to install an inverter on Winnebago Minnie

My layout may not be the same as yours, but I would install it in my MH in the front basement on the passenger side. That is right beside the battery compartment under the steps for a very short run of wire. Then I would drill a hole up through the floor of the RV and put a grommet to bring the 120v wire into the cabin.

In my Winnebago Minnie, I installed it on the floor in unused space behind the load center. Your layout may or may not be the same as my '03 324V.

I installed one quite similar to that in my rig. I bent the front mounting strip down instead of out, and cut a hole in stiff cardboard that just fit the shape of the inverter. I then used the cardboard template and cut through a thin panel that I could access through a large removable cover that gave access to the furnace and under the fridge, and built a shelf to screw the back tabs onto. Once I slid it into place, the front face and the front tabs stick out the hole just over flush, and the shelf and back tabs hold it perfectly. The main wires, if it's 1000 watt like it looks like (mine is only 400) should be connected to big leads near or directly onto the battery.