Last week I installed an autometer boost gauge in my car. Everything's been working fine, but tonight none of my dash lights or radio, heating/ac lights would come on. When i turn the headlights on the clock and radio face don't dim either. What could the problem be? I tapped into a wire coming out of the cruise control button (it was purple if that helps anything). Blown fuse maybe? I checked all the connections and they're all still good (the ground is still fine, connection with the wire is fine too). Also, I didn't cut the wire I tapped at all, just stripped it and wrapped more wire around it. Anyway, any suggestions on what this could be? Thanks a lot.