Welcome to the IRV2 Website! I suspect you need a new "Neutral Safety Switch". This switch prevents starting of the engine when not in park or neutral, and also controls the backup lights when in reverse (I would check and see if they work, I doubt it) and in the case of reverse that switch that powers the reverse lights also is commonly where the power for the backup camera comes from (when not manually selected). When this switch fails, commonly you can't start the engine in park or neutral, sometimes you can in another gear shift position, and commonly the reverse lights (and your cameras) will not turn on in reverse. The first item on this page is likely what you need, installing it could be an issue if you don't have the tools or mechanically inclined, however if you are, the switch isn't that hard to change (assuming you can easily get to it, it being the side of the transmission where the shift lever connects). ~Craig
https://www.fordpartsgiant.com/oem-f...ty_switch.html
BTW, I just noticed it was out of stock, you may have to search and call around to find one. :(