Flasher Unit built to a price ?

[tommymck]

I think that what Alain is saying is that the inside of the back and sides of the housing is black or something. In that case, adding reflective material would increase the output forward. So long as the housing isn't a parabola with the bulb at the focus, it wouldn't focus either. Not sure how this would "spread" the light out though, and since it's going through a diffuser anyway, I wouldn't think it'd be necessary. In any case, if the goal is to increase the output of the signals, sounds good to me.