I ordered those as well (the first time) and used electric tape to cover one side on both sides. Worked fine for quite a while. Next time I got these and like these a lot better and you don't have that issue:

http://www.v-leds.com/Exterior-LED-B...95898-1-2.html

http://www.v-leds.com/Exterior-LED-B...77820-1-2.html

http://www.v-leds.com/Interior-LED-B...68541-1-2.html