Normally you would control the LED- line
Take a look at this page for some info on connection:
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1266731629
Normally you would control the LED- line
Take a look at this page for some info on connection:
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1266731629