If you're having pairing issues with the Furrion Vision S Wireless RV Backup Camera System w/ Night Vision # FOS43TASF then you most likely aren't receiving enough power at the camera from the 7-way connection. The camera system requires a constant 12v power source to properly function, and you could be getting just enough power for it light up but not actually work. There are two solutions to this issue:
Option 1: By using the 7-Way Vehicle Power Adapter w/ Power Switch for Furrion RV... view full answer...