fuel gage

What is your question?

I tried opening up my fuse box,to see if a fuse was shot , I noticed a live connection wire/cord connected to the top of the fuse box so I decided to leave it alone.I noticed my fuel gage pin was out of wack and my clock was set off time, I reset the clock but the fuel gage needle still is out of wack. How do I fix this/reset the fuel gage needle at the correct level? is there a fuse for this? Thank you I feel uncomfortable when I can't see my fuel gage level correctly