1990 Chevrolet Astro Q&A

1990 Chevrolet Astro Question: all my dash gauges and idiot lights are working but i have no dash lights

someone told me it might be a four-prong relay. Do you have a location and test method? Bulbs are all ok -
Answer 1
there is a separate 7.5 amp fuse for the dash light. they work off the headlight switch. how do you know the bulbs are good?? Roy -