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My dash lights comes on. But when the head lights come on, the dash lights goes off. What is wrong.
Perhaps the dash light dimmer control on your 2000 Buick Regal is all the way off.
The radio light goes out too.
The dimmer controls the radio lights also.
Q&A > Buick > 1993 Buick Regal
Q&A > Buick > 2001 Buick Regal
Q&A > Buick > 2000 Buick Regal
Q&A > Buick > 2003 Buick Regal