Display too bright when connecting through RCA?
When using RCA connections make sure that the cable leading from your Wii unit is correctly connected to your LCD's RCA "IN" socket and not RCA "Out" socket. This will solve the fault emmediatly without extra cable purchases.
In most cases these sockets are very difficult to observe when the screen was already mounted to the wall or when the labling arn't clear.
Hope this helps some of you.