If I were you, I'd call forest river and make sure I had a supervisor.
I'd tell him what you found and send him the picture via e-mail.
This is absolutely NOT code and the guy on the assembly line
needs a time out!!
I've had my converter out to install a battery disconnect and
so I know my white wires do go to the buss bar and not
like your photo thankfully.
Our trailer was an RV show trailer and it sat with EVERY light
on for 7 days. Most people would never do that.
I think you could likely over heat that single lead
with every light on at once.