Mr. Bunzer thanks for the great explanation in your video. As for my subject please. I would appreciate your advice regarding the installation of an Xantrex inverter in our 2014 Excel Winslow. All models require same grounding to chassis. Problem is, the ring connector does not have the required star washer, the ring connector is placed on top of two bare grounding wires wrapped around the grounding bolt (not stud) resulting in the ring connector not being flat against the chassis. With this said, "how can the installer assure the connection will maintain the required Permanent, low-resistance connection? With two (Even one is unacceptable and created a code violation) bare grounding wires wrapped around the grounding bolt to chassis, how can the correct torque be maintained. Now, the chassis is painted (manufacturer is out of business therefor I cannot find out if they painted with a conductive paint or not). I learned from Keystone RV they didn't paint my Keystone RV with conductive paint so I'm to believe a company going out of business wouldn't either. I believe the major concern here is the lack of assurance the permanent, low-resistance connection never existed and is probably getting worse. Please advise on this especially after learning the manufacturer is no longer in business. Best, Terry Mishler