Fuel pump and the gas gauge not working

I replaced the battery in my truck and repaired a fuel line. The truck doesn't get driven that often. About once every three months. Well, once I got everything fixed the fuel pump and the gas gauge have stopped working. I made sure it had gas and I put and extra five gallons in it. I have not checked any relays or done any trouble shooting on it yet. But maybe you might have a good starting point for me. I did check the connection on top of the unit and everything is tight.