How-To: Connect your PC fan to a 12v Adaptor

Originally Posted by purplehazin

Either the red or blue wire is just to tell your computer the speed at which the fan is running. So, since it's not being used for a computer, you can either cut it off or leave it hanging. TO figure out which wire has the power, connect the red/white and plug it in, then if it doesnt work try the blue/white.

I have an Intel fand that has four wires, black, blue,yellow, green. would you know which wire would be the positive. Thanks in Advance

wouldnt the led fan mess with the flowering stage of the plant. i have the same fan but 120mm.

this is a good thread. But if you are willing to spend money $25 can get this nice controller that somebody else posted in another thread.

http://www.tigerdirect.com/applicati...2147&CatId=501

thanks man much appreciated.

dudes i need help please
bought 2 12v pc fans to cool my small grow box
tryied connecting to a 9v ac adapter ..
worked for a second .. and i didnt notice it to stop .. i stoped it intentionaly and tryied connecting the 2 fans properly
as my test run seemed to go well .. i wired everything together .. but nothing worked. .
then i went and tried every combination possible with the 2 fans ! and notice i only tried 1 of them at the begining ...
anyway nothing works
the ac adapter works ... im checked ..
but fans are dead !!!
what did i do wrong ? how could i kill a fan so quickly without even a little smoke ... smell or anything actualy ...
how can i avoid this problem again .. because i must work with pc fans ..
im low on space and trying to keep all the space possible for the plants
pleeeaaasssseee help .. this basicly ruined my whole week

Originally Posted by micha808

dudes i need help please
bought 2 12v pc fans to cool my small grow box
tryied connecting to a 9v ac adapter ..
worked for a second .. and i didnt notice it to stop .. i stoped it intentionaly and tryied connecting the 2 fans properly
as my test run seemed to go well .. i wired everything together .. but nothing worked. .
then i went and tried every combination possible with the 2 fans ! and notice i only tried 1 of them at the begining ...
anyway nothing works
the ac adapter works ... im checked ..
but fans are dead !!!
what did i do wrong ? how could i kill a fan so quickly without even a little smoke ... smell or anything actualy ...
how can i avoid this problem again .. because i must work with pc fans ..
im low on space and trying to keep all the space possible for the plants
pleeeaaasssseee help .. this basicly ruined my whole week

i basically just took 2 old fone chargers, sniped leads, bared wires, one is red other black or yellow.]

just hook up red charger cable to red pc cable wire, and black/yellow charger wire to black fan wire, snip any other pc wires, not need, mines work a charm, fone chargers are 9v but can run a 12v fan without burnout.. hope this helps as its not the voltage thatll be blowing it but the amps..

For those of you having problems with multi-wired fans, my advice would be to buy them with only the 2 wires. Just search the internet for 2 pin PC fans. Hopefully that helps. They're usually only a buck or 2 a piece.