I'm trying to find rear turn signals that would fit on my 06 night train with the detachable sissy bar on, there is limited space, any suggestions or help, thx ken

 

I ran kuryakyn bullets on my softail custom and they fit (barely) with the sissy.
Seems I saw a license plate frame with signals in it that would eliminate your prob all together.
There is probably a tail with integral signals as well.

EDIT: The strut mount bullets