Originally Posted by Lumatic
Early in this thread I said it appeared the ground and charge line had been reversed. It appeared this way because of the wiring configuration difference Uwe describes above. Either changing the wiring confiuration in the trailer side of the umbilical or at the 7 way will make the accomodation, but will be out of sync with the schematics and may lead to confusion (did with me) for someone working on the system if they are not aware of this issue.
Just keep the truck side of the umbilical cord to the new RV standard, and make a note of which wire does what, by color. Button it up...
Now, take Airstream's version of thow hings shoulda been wired in 1971, and put the wires in place according to their plan. This is not difficult, and will work just fine. Your trailer is already wired from the input connector on back, so it's just a quick adaptation.