I'm with Cray. They probably found their way in from the backside of the gauges, so that would be the place to remove them from. Not sure how hard it is to get to the backside of your dash, but maybe getting a smaller diameter rubber or plastic hose/tube and taping it to the inside of your wet/dry vac hose....tape it up good to seal the sm hose/large hose connection.....then you can snake the sm hose up to the back of each gauge to suck 'em out. Maybe.