If you have a truck body you have lots of room underneath it. There are normally lots of options;<div>I would get a steel shelf or box, put the batteries in there,</div><div>run wires up into the body and run wires into the engine compartment.</div><div><br></div><div>Even hanging a steel tool box you get for cheap at a garage sale will do.</div><div><br></div><div>Since all you have are the cables coming into the box, you do not have to worry about fumes. Mount the inverter on the wall.</div><div><br></div><div>That is how I am re-wiring mine. Box Truck as well.</div><div><br></div><div>Now I do have a small fully sealed 12v battery that I just got. This battery will be up on a shelf being recharged by a solar panel that is inside on the Skylight panel that I have. This battery is to run a couple of computer fans during the day and evening to pull the hot air out of the Box/living area. This will keep the heat down a lot. </div><div><br></div><div>Since the computer fans in the computer boxes are all 12v and draw so little power and are so quite, I will be running about 3-4 of them. </div><div><br></div><div>Soon I will get another solar panel to run the fans directly in the day time and the other I can switch to in the evening when the sun is low. Just using simple quick little clips. </div><div><br></div><div>So far I have tested 3 fans with no issues on the solar panel and it is just the 1.5watt ones. </div>