Is the screen suppose to Dim, i just got my unit a couple days ago and realized when my lights turn on the screen dim's is that right or is it suppose to light up when i turn my lights on thanks for the help?

thats correct if connected properly/fully

It's supposed to dim. Because at night, when you have your lights on, the screen doesn't have to be as bright for you to see it properly. Hell, if it's too bright, and your eyes are used to the dark, if you look at the screen and it's too bright it could be hard to see.

Basically, yes, it's working right.