My rear camera died so I replaced it with: BT4Z19G490B
  
 The camera works, but I am unable to calibrate it.  Using ForScan, the calibration routine gets to 8% then the dash lights flicker and the test fails.
  
 I read all the posts I can find on this issue but nothing that pertains directly to the Ford Edge.  Does anyone know how I can get the guidelines back?