Rerofitted Led Tail Lights, Now have no blinker, or brake.

Note that the original poster is not simply putting LED bulbs in the existing fixture, but rather has replaced the entire fixture.

This doesn't seem to be a turn signal flasher incompatibility in as much as there is no illumination of the turn signals in some cases, and at any rate that would not prevent the brake lights from working. That could still be a problem, but if so it would only be apparent once the lights are illuminating at the proper time (illuminating, but not flashing properly).