I'd like to give an update on the external trailer camera functionality I experienced during my last trip. To my delight, I can confirm that with the 270 deg system, you can watch this camera view for as long as you want even above 8 mpg. In the camera view selection page on the console where you can select backup view, truck bed view, internal trailer view, or the external trailer view, I was able to select the external trailer view and keep this view up for as long as I wanted. You have an option to either tap the black box X on the top right of the view, select another camera view, or come out of the camera view selection page all together. I was very pleased to be able to do this. It is VERY helpful to see the traffic behind you instead of it being usable only for backing up situations. No "invisible view' of course but hey, you can see everything regardless!
I will say this, and I saw this in another post, that you need to make sure you that you truck is powered off when making the camera connection to the back. If you do it while the truck is running, you may or may not have the external trailer view option available to you for whatever reason. Also, one last odd situation. I was never able to use this camera view while in the trailer app on the console. It'll detect the camera as it will give you an option to "preview" the view, but when making that selection, it'll ask if you want to "open this view in the app". Thus far, nothing ever happens when selecting this option, you can keep tapping this box over and over again but again, nothing happens. It never opened. In other words, if you want to view your external trailer camera, you will need to exit the trailer app so that you can go into the camera view selection page.
Hope this helps others when deciding to purchase the external trailer camera! I'll give an update if I am ever able to make this work within the trailer app.
Thank you!