It may be to early to cheer but I'll go ahead anyway & see what tomorrow brings Thanks to everyone who took the time to advize & support me with your replies I did try most everything you suggested ...
Thanks That circuit breaker is located under many wires at bottom of battery box Leary of working on any electrical device If I disconnect from shore power , disconnect positive & negstive battery cables will it be safe for me to just place my hands with a wrench & etc & work on removing & replacing circuit breaker??? Will power from truck battery enter into picture Thanks