I need to put a switch to make the low air pressure buzzer quiet while I start the truck. There is a switch in my truck is hooked up to nothing. I can't hardly start the truck up here anyway. I can't hear the engine for the buzzer. I have looked under the dash, but cant find it. can anyone tell me where the buzzer is. I looked at the manual, and it showed some square panel, but I do see that either. Do you have to take out the glove box or something like that?