Backup camera not working

I have a 2016 voltage 3895 with the garmin nuvi68lm BC30 monitor
Worked great last year
This year first time going to use it this year
I got a loss of communication message on the monitor.
So i researched the error message
And found to redo the pairing procedure. Tried that numerous times
All i get is a message saying pairing has timed out and distance is greater than 45ft.
I even parked in wide open area and parked my truck closer to the rear camera. Same results nothing. Did anyone have this problem
I cant seem to find any info on internet
I dont know where the camera gets it power from either and where the transmitter is located for the camera.
Any help would be appreciated

Thanks