ughh check the fuse box lol. if not the fuse box what state u live in. i live in md adn can maybe take a look at it. as far as the vents go did u put the dash back on correctly cause thats just air blowing through a tube nothing electrical. the whole ac/heat system is tapped into one source not multiply for each vent or sets of vents. def. sounds like a fuse problem or some retard tapped the dash lights, horn, adn radio all into the same power source and you didnt hook it back up.