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

someone told me it might be a four-prong relay. Do you have a location and test method? Bulbs are all ok
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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??

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