So several of the lights in my gauge cluster weren't lighting up. I pulled the gauge cluster and removed the printed circuit board. I found an area of corrosion on the board. I have ordered a used 2003 Mustang GT 5-speed cluster off of eBay. It uses the same exact circuit board. If I swap the board out, how bad are my troubles going to be with P.A.T.S.? Will the car even start? Will the mileage be accurate? Can I fix these things myself, i.e. workarounds? Or...am I going to be stuck dragging it to the dealer to get them to program my new (used) gauge cluster? All input is appreciated!