I don't want replacement led bulbs. I'm making custom rear lights and need to source individual led's!
Having scoured the internet it seems a standard incandescent 21 bulb is 180-200 lumens, the problem I'm having is led's are measured in mcd (millicandela) and as far as I can tell there is no direct conversion........
i richt. Thought it would be something like that. I think you are better of in some electronica shop.