Turn signal: get the yellow / orange:

Amazon

Amazon

Brake light: get the red




get a piece of sheetmetal and bend it, mount the lights to it, mount the sheetmetal to the rack/fender.



No more bulbs.

 

For any of my offroad ridden bikes I buy the LED strips from Walmart or any autoparts store in orange, cut to length and mount them vertically on the edges of my rear license plate. I haven't had issues with the front so all of those are stock currently.