05 FX35 Navigation screen problem


New member
Bought my first infiniti last week. Replaced a few parts to get her running. Man I love this car runs like a peach.
Anyway, While fixing the other small things i decided to tackle the navigation. When I put the car in reverse I can see the screen perfectly looks great. however, when the car is in drive, park and neutral the screen pretty much goes dark. I have to be in a dark place to see the screen and even then its very hard. I though it might have been a bad unit so I picked up a new one. Same thing. The stock amp is working fine no issues there.
The previous owner wired in a Parrot audio box, dont know if that could be my issue.
All fuses look fine i used a test light nothing came up bad.
What else can I try I am running out of options here.