@jd1923 I think there's just one hole in the Ollie hull. It's sealed with a rubber grommet around the wire. It looks like a second hole due to photo perspective. I think, I'll check again in the daylight tomorrow.
I'm thinking about pulling the wires but I'm also considering adding a light to the bumper area. Do any of you more experienced owners see a need for a light in that area?
Thanks to @Steve Morris for identifying the plumbing connector. Unfortunately I don't think I have the whole Waste Master system, at least not as pictured in Steve's post. My hoses are orange and I don't have the 90 degree with handle and valve on the end. I do have a couple sections of the orange hose and a clear 90 on one end. This is our first travel trailer (with indoor plumbing) so I could be wrong about the hoses. They accordion in and out very well and seem durable. I don't have any experience with other waste hoses to compare these to.
I'll have to look more closely but I don't think I can remove the DrainMaster piece with the latches. I'll check tomorrow (if it's not raining) but I think it's all glued up as one piece now. I wanted to attach the drain hose as @jd1923 suggested but, as configured, the pipe extends out to just short of the hinged bumper.
Thanks for your help and advice,
Tony