Take ou the loop wire. Connect the dvr input to the top connection and the dvr output to the bottom connection. Thats all there is to it nothing more nothing less. Just remember to unhook everything if you want to watch regular tv off the rv's antenna.
There is also a community site on here of RES327 owners. Feel free to take a look at it. On the top bar you will see a icon for community click on it and scoll down to groups and jion the group if you want or feel free to look around. If you have anymore question you came to the right place everything gets answered here.