Inverter setup

Good advice but you forgot the MOST important thing you need with the cables and that is a 25 to 30 amp circuit breaker AT THE POSITIVE terminal at the battery! I've seen several trucks burned to the ground just because there was no protection at the BEGINNING of the circuit and as close to the terminal as possible! Mine is 10" away from the post on the positive side of my cable and has a reset button in case it trips! If it does trip I guarantee that you will not endanger the truck but don't just go and reset it! Inspect your system for a fault then reset it.

A circuit breaker at the inverter is useless as if that cable DOES get chaffed and gets hot that breaker 10-20 feet away from the battery will only protect the inverter until the fire gets to it!

Also remember you are not getting something for nothing! They will pull your batteries down from the constant stress even when running the truck!That means replacing batteries sooner that their usual life span. Even those DC operated things like an alarm clock and cell chargers ect.help in reducing the life of a battery! If you have a battery separator system put the inverter on the battery side and NOT the truck side. If you have an APU it should come with it's own inverter hookup.

If you are an O/O or in a good fleese program (ROFLMAO) I HIGHLY recommend an APU instead of just an inverter system. The money you save even while fuel is at $2.55. The stress on the batteries becomes nill with one, the cost of idling goes down as does the cost of that idling ticket! These things makes it well worth the investment AND that APU can be transferred to your new truck at trade in!