Originally posted by sysfailur
Well I dunno how to describe it... if you look on a fan plug there is that plastic thingy.....

Code:
 _____
| ___ | <---plastic thing sticking up
| ... | <---3 pins
|_____| 
    ^
    |
  ground

Hope that works
Exactly the answer I was looking for! Since I don't have any 3 pin fans in my system, I can't look for the black wire.