So that didn't do it.. I took apart the whole part of the odometer dash and couldn't figure out where the noise is coming from. I tightened every bolt behind each panel I could find and it wasn't fixed. I honestly want to say that the noise is coming from my odometer when I drive over rougher roads. I am going insane over here trying to figure this thing out. I'm assuming you can't unplug the odometer and drive without it plugged in? Something else that makes me believe that it is something to do with the odometer is I went over a pretty big speed bump this AM and it sounded like something was clunking around that area, almost like whatever was moving hit the top and bottom of the enclosure and made the same noise.. send help please lol