i was not the first
i followed the lead of another member who did it
the light strip is a 16ft roll aka 5 meters, of led segments
every three discreet leds make (1) 12v section
cut them to any length using multiples of three led-sections
my (2) 30w fixtures(2*15) got 3 strips, each about 14" long
i think i measured using about 10watts instead of 30w
my small fixtures that were 18w (2*9) got two short strips and use 7w now instead of 18w
i used these
http://www.amazon.com/gp/product/B00DTOAVYY?keywords=roll%20of%20led%20strip%20lighting&qid=1444100337&ref_=sr_1_12&sr=8-12
there are connectors you can buy for the ends of the cut sections/strips or you can just solder wires to them, to wire to the 12v switches in your lights
i did some with the connectors and some i soldered
there is a post someplace with picture, i will try to find the ones i took and repost