I switched my lights on the other day on the way home and the dials (speedo, revs, fuel etc) failed to illuminate. The computer info screen dimmed so that it was very faint.
I've checked some of the likely fuses, but havent checked them all yet. I installed an aftermarked HU a week ago, but I have driven at night a few times since then. Everything else works.
Any ideas? It's an Astra G coupe turbo.