Hello guys! The brake wires on my new-to-me 08 Aliner Classic go from plug, into camper (under bed) and then back out to the brakes. I don't know yet if they connect to anything inside b/c the inspection shop still has it. They want $400 to determine issue. Any idea why it would route in there? There's no power to them (actually NEVER activated although installed by original owner years ago) and I'm trying to determine if there is any reason why I can't just ask shop to run directly from plug to brakes.