Pretty, though I too would be happier if the sockets were coffeeproofed.



What I might have done differently:



I would have been inclined to leave the inverter box closed (preserving the warranty) and just design a wiring harness that plugged into it and extended the 110VAC and USB connections out to the panel. The only problem with this approach is that your inverter has a push-on/push off switch.



If your inverter had a simple toggle switch, it could be left turned on, and power to the inverter run through a panel switch -- or, perhaps better given the peak power draw, a high-current relay could be controlled by a lower-power switch circuit. An advantage of the latter is that the switch could be fed from accessory, or could be a three-way which tapped either accessory or an always-on circuit, to reduce the risk of leaving the inverter drawing power when it shouldn't and running your battery down. (Same reason dome lights are now three-way, and many headlights go off when -- or shortly after -- key is removed.)



Given the pushbutton... Hm. What happens if the button is held down before/while 12V is applied to the inverter? Would that be enough to cheat it into being externally switchable? If so, rigging something to hold the button down continuously would be easy and -- again -- would probably not void the warranty.



Yeah, the motto here is "If you can't open it you don't own it" -- but if you can find a way to achieve the same result with less work and without having to open it, that's preferable.

