I've owned several darts over the years starting in '74 ish with a 67 GT, purchased it from my father who was the original owner. It had the fender mounted turn signals. Later on I purchased a 69 340 swinger in the summer of '75 (still have it). The swinger has the bullet style fender mounted signals (L31 on the fender tag) which was an option. Both cars had dash illuminated turn signal lights as well as the fender signals which operated in unison. Possibly on B,C or E body's they may have eliminated the bulbs as you mentioned but as far as I believe they didn't on A body's. Just my two cents.
