Coolerman wrote:
How is the dealer supposed to work on it if he doesn't know how things are wired and ran?
Dealers authorized for specific brands do have access to additional technical information not contained in generic owner's manuals AND can always contact the manufacturer if they need additional information. Techs also take courses and factory tours that are related to the specific brands of trailers the dealership sells so they have a pretty good understanding of how the trailers they're working on were put together. No way would any manufacturer offer information such as wiring schematics to the general public nor could it even be included in any generic owner's manual as it would be specific to each and every model of trailer the manufacturer builds. Whether you agree with it or not the expectation is that if you have an issue with your rig that requires more information than what is contained in the owner's manual then you should take it to a tech trained to work on that specific model.