i recently traded my EXPEDITION FOR A 2011 harley davidson F150. i live in a rural area and when i back out of my driveway, my rear view camera is useless. i can't see anything. DARK. when i had my EXPO and put it in reverse, it lit up the whole area. with the HD F150 nothing. the dealer says it's working as designed. is this true? BTW, i've changed the brightness and contrast, no change.