One very important note that is stated on the web site:
You must connect the accessory port directly to the battery and have a 10 amp fuse on the positive wire. The stock accessory port has a 5 amp limit and the fuel pump draws 7 amps, which will trip the canbus virtual fuse.
I would add to LaurelPerryOnLand's list that your Powerlet Socket (or what ever socket you are using) has to be connected to the battery therefore by-passing the canbus system.
Nice little piece of insurance. Bought one.
Now I'll probably never have to use it, but that's fine with me.