warning lights

Roadmaster Model Year 1994. The backlight of the instrument panel works, the turn light and the high beam indicator work, but everything else is dark. All fuses appeared to be working. Does the instrument panel have its own fuse? Where to go to find the fault?

All dash lights, gauges go on or off randomly. Sometimes all. Fuel gauge and normal lights (cruise and gear selector go off) and warning lights come on. Not always the same. Very erratic. Bumps make no difference. Now, door locks seem to be included.Also, with radio (aftermarket) off, now have...