The requirements for the kit I'm looking at is 12VDC+ and 300mA. This seems too much for even a bridge rectified supply off the filaments (and could add noise). I think you'll need to use a separate wall wart supply for it.
k4306k 2x15 led. i do have a radioshack unit. will have to mount on back wall its to big to fit inside my custom case. 273-1511b 12.6 3 amp. im having fun.