Sorry mate, might have misled a bit - it's the windscreen I need to do - I've done lights a couple of times!
The screen is badly scratched on my A2, but the bit I actually look through isn't too deep, so I'm thinking I could hopefully improve that - but for the limited results I'm expecting, a few quid on some Cerium Oxide is fine, but if I add on £40 for some decent diamond pads, I'm halfway go the cost of just getting a new screen!!!
(£100 excess for a new screen)
I'm just wondering how much the sandpaper will do on glass, compared to a plastic light!!!