How to clean / polish instruments cluster lens?

If you can get to both sides I have just used white rouge and a loose buffing wheel,
mine is a 3/4 HP Baldor with 3, 1/2x10" wheels together on one side. You have to be careful not to burn them but I have cleaned head lights that someone used bug spray on them to polish, DON'T do that it melts the lexan and makes them a mess. They came out like new with very little work. It works on tail lights, I have only done motorcycle ones but have done a bunch of old Triumph's that were in very bad shape and they came out great.