How to clean / polish instruments cluster lens?

I have had good luck with the Novus plastic polishes, been using them since the late 70's. It will remove fine scratches and swirls. Comes in a kit with a coarser compound, a fine compound and a final polish. I use it on everything from motorcycle windshields to helmet face shields, aircraft windows, tail light lenses, gauges, sunglasses, basically anything made of acrylic or polycarbonate plastic. Can be applied by hand or by machine.