Stereo & Electronics - gauges not working

i was just driving yesterday and saw that my headunit was off my gauges dont work. the only thing that works is oil pres, volt meter, seat belt light, turn signels and high beam light. everything else is not work. spedo,tech, mileage, but worse of all my gas gauge, and i dont know how much gas i had lol. help please.

Test and replace the 10A GAUGES fuse (#9) in the fuse panel on the left end of the dash. Don't just look at it because they often look fine when they're actually blown.