There is a dimmer switch on the dash,it needs turning up
check the bulbs and the wires
The light switch.
Shoot yourself.
You may have a connection problem with the junction between the cluster and the dash itself; I would check this carefully.
Could be the dimmer rheostat has an open Could be a bad headlight switch Could be blown bulbs
It could be the dimmer switch that will adjust the dash lights
Start by checking fuses Then check the light bulbs Some Bonnevilles have “Cluster lights” These should be checked by a dealership or a qualified mechanic
either the switch is not working or a wire to the switch is broken
AnswerIf the bulbs check out OK then I would check for a loose ground wire.Replace your turn signal switch, that's what I had to replace to get mine working again.
The dash light dimmer switch is turned off or broken.
Have you checked all the relays? If so, check the wires for shorts. If you have dash lights its probably a short. The fuse for brake lights often also carry the dash light too in an effort to let you know that you have brake lights out.
Generally the light switch pod. Get on ebay and but a new one