The longer skinny one is to fit in the back of the Milan. The trailing edge of the Milan is not very wide so they are only .3" wide. I will cut a hole in the trailing edge and then bond in a clear casting resin block with the LED strip attached to the back of with air space so the heat sink function of the aluminium strip still works. I will then round the block to match the shape of the velomobile. Some sanding with fine grits and polishing will finish the job. I thought of just casting the lights into a block but they get a bit too hot for that. The LEDs in the long narrow strip are red and the other are amber. They are each 2 watt LEDs so each light will be 6 watts.
Here you can see the lights in comparison to the tail lights of a Honda CRV. The camera makes the LED in the middle look a bit less bright than it really is. When I picked up the lights off the back of the spare tire I touched the aluminium strip and got a small burn for my trouble. So they get plenty warm.
Not quite as bright as the brake lights but still much better than a 1W LED.