Instrument cluster circuit board. If you dash lights are dim or not working at all despite changing your bulbs you may need a new circuit board! This is a Brand New, High Quality Reproduction Circuit Board for 1959 Cadillac. This will fit all 1959 Cadillac models. These circuit boards are Made in the USA. Buy with Confidence. These circuit boards are a perfect fit. If you are working on your dash, check your gauge cluster circuit board. These boards are often corroded, broken, or the wire traces are de-laminating from the board. These high quality reproductions have an improved design with solder mask covering all tracers that do not require contact. This keeps the board from corroding, being scratched during installation, and prevents the conductive traces from de-laminating. This is a great part, don't miss the opportunity to improve your Classic Caddy.