turn signal won't flash
This could be caused by a number of problems. The easiest way to save time is to turn on your hazards, get out of the car, and look at the front and rear bulbs. If its a bulb or socket, the bulbs will not illuminate. If they all do illuminate, then its an issue with the flasher or something deeper.
Could have been the dual filament thing, I don't know anything about that. Might read up on it.
But have you tried anything like what I described?






