im converting my k5's radiator support. im putting in an early 80's front in (headelights above and below eachother) Im taking out the support with the headlights beside eachother and the long blinker below them. Will the wiring plug directly into the firewall where the old wires used to go and work? or will i need to swhitch some wires around? (will the blinkers, low high, and horn still have the same terminal?)