182G New A/C Install

You guys could both be right.  It isn't a hollow tube, it is a copper wire, I did end up attaching the "wire" to a screw on the frame.  If it is some sort of temperature probe, I don't know how it would apply to my system.  It's ductless direct below the unit and the selector controls are directly controlling the unit (one selector going from warm to cool the other fan speeds and A/C speeds).  I did a test run with the A/C and it cooled the trailer off in a half hour in the middle of the day so I'm happy.  I managed to run it on low cool without tripping my 15 amp house breaker that it was plugged so all of the wiring seems to be good. 

Whoa there a sec. I  just now got back on my PC and was able to navigate the photo. Hard to get my bearings in the photo but I think what you're calling a bare copper wire is really the temp probe for the thermostat. Do not cut, bend, or damage it. Does it seem like it might be a tube?  trace it back ans see where its coming from. 

If the manual doesnt have a suggestion I think anywhere to metal that wont cause clearance problems would be ok. You could use a ring terminal to help with the clearance.

See if you can trace where in the a/c the bare copper pigtail goes. I suspect it goes to metal, in which case you can attach it to the rpod frame and you'll be good to go. 

Hmmm. The bare copper wire in the supply cable should go to the green pigtail of the a/c. The bare copper wire in the a/c might be there to provide a frame ground to the RV. Can you tell what it’s connected to? Any mention of it in the install manual?