ok i have the limited stereo and gps in my maverick but the gps ,when you go into the options menu for screen brightness and or back light, it doesnt brighten up. in other word its like the l.e.d. lights out so which one of you smarty pants on here, have a clue what this is the screen is very hard to see but everything works. i dnt know if the dimmer funtion is broken or the l.e.d. isnt working at all? any one else had this issue? or do you know where to send it ? and i bought this awhile back for my commander but then sold the commander, and thought oh well ill just install it on the maverick! but now that i find out it doesnt work properly. i cant find my dam reciept! and garmin want you to produce a reciept before theyll warranty anything so can you guys point me into the direction to someone i could contact about this?