Peridically, it's a good idea, to get out the tools, and go around the coach, tightening all the electrical connections, pushing & pulling to make sure the "crimp on" ones are not losing there bond. There is a large ground connecton on the engine PS side, which should be checked also. Grounds & lose connections are the biggest problem with our coaches, i.e., an earthquake happening every second it's moving. Also, there is a huge "HOT" connection up front behind the gen slide PS side, more of a stud which goes through the firewall, it's held in place with a few nut/bolt assemblies which get lose and need to be tightened. Before touching this connection, turn off the coach, and then check with a meter to make sure it's dead. I think someone told me it's 200A DC, which can kill you. EM knows for sure.
Monty & Janet - 2007 Alpine APEX 40 MDTS
S/N - 75715 - Retired - Master Certified RV Tech