2001 Saturn L200 Car Start Starts Power Lights Inside Including Dashboard Gas

I have a 2001 Saturn car and when I start the car it starts up but I have no power to the lights inside the car including the lights for the dashboard gas light does not turn on wen running low on gas and it doesn't read how much gas the car has the neddle that reads the hot or cold is also out mph rpm work ok ....plz hel