I have a 2003 Mack granite. Randomly the seatbelt light comes on and the buzzer beeps as well as all of my gauges turn off. It will keep flickering on and off and will stop if I beat on the dash. I figure its a short somewhere but I don't know where. Does anyone know what could be causing this and how to fix it. And if not does anyone know how to disable the buzzer. The constant beeping is about to drive me insane.
PS: My seatbelt is ON. It does this whether I'm wearing it or not.
Thanks in advance,
Gwilliams119