Along with what vata suggested, try flipping the led around and make sure the leds are not blown. When I was putting mine in, some of the leds were dead, so I made sure I tested every led with a 9v battery.
did you do your driver's door heated seat switch? i need some pics of the leds on the board to see which way they need to go. the lights are in series and i had trouble getting them all to work.