I have no dash lights on my 89 bronco. I was talking to a friend at work. He suggested, after eliminating a blown fuse and all the bulbs miraculously going bad at once that the conductor sheet, or circuit board if you will, had gone bad. I started the tear down and found that the bulbs are good, but I'm wondering how to get the speedo wire unhooked. How does it unhook from the gauge? I'm hoping I don't have to pull the whole cable. Can someone help me with my speedo question? Also can anyone tell me where I can find the replacement circuit board that feeds power to the dash bulbs