Originally Posted by
bee-man
Cateye has a product for rear racks (mentioned by Reddleman):
https://www.cateye.com/intl/products/parts/5445620/
If this bracket can be used in place of the reflector, then you will have a healthy selection of safety lights to choose from Cateye (scroll down in link).
I do not have a rack on my Brompton, but I replaced my rear reflector with this bracket and a rapid mini rechargeable light. Super easy to remove & install for charging. Love it.
Thanks! This is very helpful!