The switches on my box didn’t do any thing either!
The camera does not have sound.
Leaving the cameras on all the time hasn’t caused me any problems and I have driven 10-12 hours at a time. I didn’t use the trigger wires when I wired my monitor, I mainly use just the rear camera and it’s easy to switch views on the monitor if you feel the need.
As for mounting I used a Ram suction mount with a short double ended arm and an adhesive disc. If you use the adhesive disc make sure you clean the area well and allow the disc to sit 24 hours before using.
I think you’ll be very happy with your choice!!!
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