Is that the 7" monitor? Can you see over the monitor OK while driving. Yes 7" easy to see in bright sunlight, bit to bright at night.
Did you have the camera wired into the center clearance light? Yes, about 8-9" below the light, hole for power grommet slightly above the mount, remove the clearance light and fish the connecting wire up and splice in. Run TV lights while towing.
Can you see traffic while towing? Yes very easily if properly tilted so that you can just about see the back bumper on the bottom. Makes it easy to know when you have passed someone.
If the camera was mounted higher, closer to the clearance light could you see the traffic while towing and still use it to see backing into a campsite? To high and you won't see past the curve of the shell. 8-9" is the sweet spot. On my 25 without full awnings I could see the corners of the bumper and slightly above the horizon line to the top.
Nice thing about the Voyager is the wide angle view. Not much out there with the angle of view.
2015 GMC Sierra 2500HD Duramax