I should not be having grounding problems yet! The trailer is less than 2 years old.
(humor mode on)
Of course not. Especially with it being located on the ladder frame rail where the belly skins might allow persistent humidity to invade when its been driven through weather or salted roads, certainly it couldn't have turned green yet, even if the last tech to touch it had other things on their mind...
Yes Ma'am, I apologize... A well lived in trailer may well have the converter going bonkers all on its own, I've just seen too many bad wires in my time - one engineering mod had me QA on a good share of 27000 HV wire re-terminations. All that aside - here's wishing you the best for the New Years!