Hi I am new and have a 27 ft Jayco fifth wheel and was wondering if it is worthwhile to install an inverter-if so what size ? It doesn't do any good to get a giant one if you only have 2 batteries right ? I do have 1- 12 volt outlet near the tv-I guess thats for small 12 volt things. Is it wise to buy a bunch of 12 volt things like a coffee pot, tv etc or just install an inverter-Im confused. Thanks for your help-this is a great forum.