Hey Rian ...
Ive been reading through your thread for a while, trying to get caught up
neat pair of projects you have and some great pictures ....
I got these lights (similar to what you started with) that I have on the back of my truck as reverse lights, looking for that little more slim / streamline approach that seem to be doing a bang up job ...
huge picture removed ....
https://smile.amazon.com/gp/product/...?ie=UTF8&psc=1
they have them with white housings too, so they may blend in a bit better
hope its helps!