Somehow this reminds me of my Dads old 1958 Ford "Interceptor" tail lights. The red leds came 4 to a pack for 26$. The backup lights mounted on the black metal stand aimed down and outward were 12$. The plastic mounting panel Plexiglass was 12$. The tail lights are wired so that all 4 are running lights, the two outer ones are also turn signals and the two inner ones are also brake lights.
I also have a 10 watt LED spot light inside the back window at the top center left & the backup camera (always on when driving and with the view screen clipped over my rear view mirror in the cab) is in window at the top right. It has a white PVC sun shield mounted on the outside of the glass window while the camera is inside the wndow.
We are now 100% LED inside and out with HID headlights.