radio and gear shift lights and rear lights

What is your question?

the radio lights and gear shift lights dont turn on at all but the dome lights do and so does the clock on the radio just none of the buttons. My brake lights turn on when i hit them but when i turn the lights on at night nothing turns on in the back, my right signal also isn't working it flashes once in the dash but nothing outside im thinking maybe i need to replace the alternator but im not sure.