Back up camera guide line issue

Not sure if this is related to washing my truck today or not . About 2 hrs after washing my truck I was pulling out of my garage and the camera was working perfectly . the red /green guidelines were being displayed

I get to the store and when I was leaving and in reverse the camera was working but the red /green guidelines disappeared . I've also been noticing recently over the last few weeks the camera view has been looking washed out . The screen goes bright then gradually darker

The Camera is wired to a Pioneer 4200 HU and I checked the settings and everything looks correct

Is it the camera ?? , I had it installed at a car audio store the same place all my audio sytem was installed