[andrewas]

Ive never heard of white wires in a lighting circuit. Only place Ive seen white used is in low-voltage applications and signal transfers, white is not in any of the wiring colour codes that I know of.

Mind you, Im scottish, american codes are weird from over here.

Normaly Id expect two blacks and one red on the light (please dont ask me why two blacks, its just the way they always are, I think that the second black runs off to the next light or something)

SO Id suggest putting that second white on the light. Or try connecting the black ones.

This advice is bsaed on nothing more than my own experiences with mucking around inside various things that I really shoudnt. Do be careful, woudnt like someone to electrocute themselves following my advice. Or at all come to that.