hmmmm....ask the radio shack guys, they know what they are doing....
as for the LED's...i bleive that hte short end is the cathode and the long the anode. the other way to tell is the flat side is the cathode... i think....damn it... thinking back to electronics class...ya my mind is gone right now.
The12volt.com
tells all about voltage drop and LED's and all
that or nsgm will come in here calling me a dubmass and then telling you the right stuff...