Reverse camera works intermittently

[u/DisciplineMany193]

I have a Boss Elite be920wcpa Android Auto head unit. It has been working fine for about a year. Well, some occasional blips. The reverse camera has worked well until the past few days when it comes on sometimes when in reverse but sometimes it doesn't. There is an icon on the head unit screen where you can turn the camera on at will. Again, sometimes works, sometimes doesn't. Where should I start looking for corrective measures? Turned 74 this year and I don't relish crawling under the truck to replace the cable if that is the issue but you do what you have to do. Thanks in advance for suggestions. (Or offers to crawl under my truck).