Should my rear turn signals be on?

[OldF7Guy_imp]

FWIW, when I had my Sportster I had some sort of plug in gizmo (cant remember what it was called) that would light up the rear signals all of the time. I changed the lenses over to red because I wanted as much light as possible at all times. I have always had a fear of being rear ended. Since that time all sorts of goodies have come out to help rear visibility.