AS per law to deny warranty Jayco would have to prove that what you added was the cause of the failure.. The surge guard should be no problem if wired properly.. The Hughes auto transformer I have no idea on them as I have never even seen one..
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 765 watts of solar, 6-6 volt batteries (696 amp hour), 2000 watt (4000 surge) whole house inverter.
140 days boondocking in 2016
211/2015, 196/14, 247/13, 193/12