These are how the two lamps look.
Since you asked for mounting system that comes on LED lamps, here they are. May not be easy to recreate locally. if you make one, we can make a mounting using Velcro strips also.
The lamp by itself can be attached to the lamp mounting points which come on the cycles.
This is how it sits on the Concorde without making use of the snap on attachment that can be used with the tubes.
Else, the mounting system that comes along with the lamp can be used. This can fixed either vertically or horizontally, which would help depending on whether you are fixing it on the seat post, handlebar or the down tube.
Different ways to make it work. One with a circuit and one without.
Circuit inside the colorless lamp, with a small resistor.
The even more simpler light system, which just has the LED and no circuit.