I would like to mount a trailer connection receiver directly into the rear of the trike body. All that would show in the flip-up cap. The trike body would be drilled for the connector body and the connector would be recessed into the trike body. It needs to be a round (minimum) 5-pin connector. I've looked around and found some that would work, but I don't like them very well. Do any of you trikers have a source for such a thing that would be discrete and attractive? I've seen (and installed) connectors that mount on a bracket right below the rear bumper, but that isn't what I'm looking for. Do any of you help me out?