Hi All, 72' Dart, things that work..4 ways, brake lights, head lights and left turn signal flashes. Right turn signal does not flash but the lights just come on steady. I changed the flasher once already, same result. I have a spare used harness and switch that I hooked up, no change. Any thoughts on where I could check next? Alternator puts out 14.3 and battery reads 12.6 with the car off.