Regarding the phone line you asked about, does it look like a phone line (RJ9 connector) or a network cable (RJ45)? Xantrex uses the smaller RJ9 type connector for the battery temp sensor (BTS) and the larger RJ45 network type connector as a communication cable between their various optional controls such as Automatic Generator Start (AGS) or the optional System Control Panel (SCP). By the way, do not use a computer network cable in place of the Xantrex network cable as they are not pinned out in the same way. I've found the tech support people at Xantrex (800) 670-0707 to be helpful although I've probably only talked to them 2 or 3 times. Have fun!
1990 Country Coach Concept 36' Anteres
2002 VW Passat on Kar Kaddy SS