Back from first long trip and need a couple things

Couple of the places we camped had sewer dumps which were elevated out of the ground so that gravity wasn’t effective at draining the stinky slinky.

Was the dump inlet higher that your trailer outlet?

For the coupler I used a 3/16 X 3" bolt with a nylon lock nut. I would hand tighten the lock nut onto the bolt.

I used a carabiner to connect the breakaway cable to a bracket under my bumper