I have a 2007 521 with a tandem trailer. When I unhooked my boat I didn’t see that the cable was wrapped around my hitch and when I pulled away it gave the cable a good yank. It now stickers out several more inches but the brakes do not seem to be on since I can still roll the trailer by hand.
I did some searches and found stuff but seem to be about different setups. I do not see and lever to flip back like everyone talks about.