i need to add a trailer 6 pin plug to my 1800, wondering best places to mount it.
I do close to the same, but rather than use a baggy I took an old pill bottle from Walgreens and made a hole in the lid of it. I wrapped the the plug wires near the plug with electric tape and feed it through the hole. Hot glued it to seal it up on the inside and outside. And just put the bottom on and off to protect the plug from the elements.I just let my 6 pin connector hang until I need it... Well, actually, I tie wrap it out of the way with a plastic baggy over it to protect it from corrosion until it's needed...
Works best for me that way - your mileage may vary