None of the gauges seem to light up on the 1970 Eldorado I've been finishing. I've tried adjusting the dimmer switch but with no luck I pulled the radio out again and took out the upper dash to get a better look. I replaced the bulbs and that didn't do anything but I did notice a group of wires with a connector that aren't connected to anything, could this be the reason? & Where do they go? Also has anyone else had problems with their gauges lighting up and what solution did you find?

Thanks a lot,
Frank