I would recommend that you add a Surge Guard to the power service into the coach. This device will check the pedistal for proper wiring, low or high voltage and then in the event of any spikes help to prevent them from damaging your electronics inside. Check it out and you will agree that this is a necessary component for todays coaches.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7