I Am Just Wondering, When Turning On My Park Lights Or Driving Lights My Navigation Screen Dims Making It Hardly Noticiable To View During The Day. When I Originally Purchased The Car The Navigation Did Not Dim At All Even When Lights Were On.. When I Disconnected The Battery For The First Time To Install An Amp And Sub Combo And Reconnected The Battery The Problem Started.. Any Ideas Of Fixes, Causes, Or Solutions Please Help!!!!!!!!!

 

you can change that - it has an auto dimmer.
i changed mine so that it is bright all the time.

On the screen press setup and (you may have to press "other" to get the option) turn up the brightness and there is another option to have the screen on manual.

you will have to look for it because i forgot the exact phrase for it as it appears on the screen.