09-03-2016, 08:51 AM
A suggestion from an electrician friend of mine regarding wire nuts: to help keep them tight, following installation either wrap them with the stretchy sealing electrical tape wrapped in the direction that holds the nut tight or apply heat shrink tubing over the nut and wire. I don't know if this will solve the problem entirely but would prevent vibration from loosening the nuts.
Jon Kabbe
1993 coach 337 with Civic towed