Since 2007, the RV Industry Association (RVIA) has been developing an industry network standard. That network standard is RV-C. Many late model RV's have electronics that use this communications standard. RVIA description from RV-C website below; "RV-C is a CAN-based communication profile for recreation vehicles."
RV-C resource website:
http://www.rv-c.com/
RV-C specifications PDF document can be downloaded from the link below. Document is copyright protected.
RV-C Specifications Link
RV-C resource website:
http://www.rv-c.com/
RV-C specifications PDF document can be downloaded from the link below. Document is copyright protected.
RV-C Specifications Link