Itchy Trigger
Active member
Standard pinout for the 3 pin computer fan plug here..
http://www.reefsanctuary.com/photopost/data/508/cpufanpinoutlabeled.jpg
Ahhh, ok. So the center one is the "positive." And the one on the right (as positioned in the photo) is the wire that sends info to the computer (assuming you're using it as a computer fan), and would be the "yellow" wire.