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I found my puddle lights on ebay, it wasnt easy. I carefully snaked the wires thru the firewall and used 3m double sided tape to secure the dome shaped lights to the bottom, ... evenly.
The power source comes from the 12V power supply under your arm rest. Just remove the center console and splice the wires, carefully.
I admit my lights are not as tight and sharp as the photos you show, but they are LED.