"SD-9 lights "
The lights on my new SD-9 only seem to go on when I first plug it into the flash (SB-900). Or when I turn on the flash if it's already attached. Then they don't go on at all even when the flash is fired. Is this normal?
Also, there is a screw to attach the SD-9 to the camera. Why would I do this? Just to stash it somewhere steady?