dummie lights

while driving all my dummie lights came on.when this happened i lost all power in my car..windows would not work,radio shut down. air stopped,but the car kept running. i made it home and when i put my car in park i heard a load grinding noise..i shut it down and now it wont start.. battery is fine and all i hear is a click coming from relay on fire wall i dont know if the lights coming on are related to starting problem..

Check battery, cables and connections. You have to get 12 volts to the starter.