12v power inverter and little 110v welder?

[Sberry]

I have one in my pickup, the danger can be overheating the alternator and harness wiring. I only use it intermittently but used number 2 wire, used a disconnect and one of the black wires is a piece of 14 so wired to a gfci outlet on the front of the truck. The unit has 2 recepts, I usually reach down and plug it in if needed.
I also hook a set of wires to 12V lugs for jumper cable hookup, this is handy and a saftey deal. I do it to most of our work trucks, this is a simple version in the lug pic.