Just got a 71 gt. the whole car has been rewired including new fuse block.rear turn signals work, front ones do not. I took the bulbs out and one was a single filament and the other is dual. What ones are correct?? Is the socket supposed to have only one contact and not two?? I turned the lights on and the bulbs light but no turn signals as of yet. Also on the dash it has three lights over two, the top left and right are the turn signals but what are the others?? I cant find much info in my factory manual.