converting 3pin fan to molex

elfy · 14 Mar 2007 at 14:57

how do i convert a 3 pin fan to fit into a standard molex? my 3 pin has red-black-blue wires and is a rather hefty delta. is it just red = red, black = black and blue = nothing(or possibly fan speed)?

silversurfer · 14 Mar 2007 at 15:04

http://www.techpowerup.com/articles/other/137

elfy · 14 Mar 2007 at 15:11

that's not what i'm looking for, but thanks

Messiah Khan · 14 Mar 2007 at 15:18

Red to yellow (12v)
Black to black (Earth)
Blue to nothing (RPM sensor.)

Edit; Or hook it up diffrently if you want to 7 or 5 volt it.

silversurfer · 14 Mar 2007 at 15:21

I thought it showed what you were asking. On a 3 pin, yellow is the fan speed and red is 12v with black ground I think.
On molex, yellow is 12v, red is 5v, the blacks are ground

elfy · 14 Mar 2007 at 17:58

messiah khan said:
Red to yellow (12v)
Black to black (Earth)
Blue to nothing (RPM sensor.)

Edit; Or hook it up diffrently if you want to 7 or 5 volt it.

planning to hookup a variable resistor to control better

elfy · 14 Mar 2007 at 18:03

silversurfer said:
I thought it showed what you were asking. On a 3 pin, yellow is the fan speed and red is 12v with black ground I think.
On molex, yellow is 12v, red is 5v, the blacks are ground

wanted it plainly spelt out, to make 101% sure