I don't know much about 'lectricty, that's for sure, but mine, Eric's, and at least two others, who I can't recall, all had some "new" LEDs blow/self destruct .....which only leads me to think it may be fairly common..???
I think I'd try to return the ones to autolumination (kind of insist on a credit)...and buy the $12.59 ones on ebay from "motoringmax" (w/free shipping) and give them a try....less to lose.
http://cgi.ebay.com/ebaymotors/ws/eB...#ht_7038wt_909
Another idea may be to consult Kenny...he's Mr. electric/electronics...maybe he has some input that will help.