I'm not much of an expert, however I'd start by checking the ground connections, particularly the battery one - un-bolt it, clean it and re-tighten.
Also usual things : Battery still charged ? Alternator charging ? All fuses good ?
On my wiring diagram (not necessarily the same for you) Fuse 5 is the Radio and Fuse 9 the instrument lights.
Also usual things : Battery still charged ? Alternator charging ? All fuses good ?
On my wiring diagram (not necessarily the same for you) Fuse 5 is the Radio and Fuse 9 the instrument lights.