Have a 1985 Riviera with the digital dash that works but the numbers are very dim and intermittent. Sent it out 3 months ago to a shop that said they can fix these dashes and still is not repaired. They have said it needs a control module they can not get. Ordered a dash from a bone yard but they sent an analog dash. Can the digital wiring be converted to analog? Or is there any way to repair the digital dash?