Below is a pic of how I came into the side of the motorhome and into the cabinet. My original intent was to use the previous hole used to supply power to the original awning arms. This hole was 1 1/8 where the kit requires a 1".
The inside repeater antenna will support multiple devices. The devices must be with a couple feet of the inside antenna for best results. The inside antenna puts out a weak signal by design, to avoid oscillation interference issues with the roof top antenna. The inside antenna has 12ft of cable so you move it closer to your devices.
Mickey&Linda
2003 American Revolution
2009 Dodge Dakota 4/4 Toad
2015 Chevrolet Sonic Toad
Middleburg, Florida