Back up camera not working

Hello! I’ve tried asking on Facebook and really want to avoid going to a auto electric place if I can, awhile back ago I replaced my gass tank due to some crooks drilling it and the person who did it unplugged my back up camera, and when I went to plug it back in it never popped up again on my head unit when reversing, I’ve unplugged it and plugged it back in and even unplugged the battery and reset it and nada, I’m kinda at a loss here and would really love any help, thank you! 3rd gen Tacoma 2017

 

I have a 2018 3rd Gen, but with a multi-cam set up, push button for both front and back and from time to time the damn thing just wont come on, then a few weeks goes by and pop on it comes, maybe unplug it, take the battery leads off, plug it all back in and put the leeds back on, sometimes I also think it's just road gremlins. Sorry i couldn't give you a bullet proof answer other than, maybe just mess around with it. (Shrugs)