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Derpy n00b-Type Fan Question

S

starhawk

[H]F Junkie
Joined
Oct 4, 2004
Messages
8,908
Hey guys, I've got a fan that I need to plug into an old computer (it's a long and complicated story). Normally I'd just call the local tech shop and ask them my dumb@$$ question, but it's 11pm here and I really don't think they're going to pick up the phone... and I'm one impatient dorky nerd ;) :D

So in plugging in this fan, I found that I've no more fan headers on the mainboard -- so I'm forced to use a 4pin (Molex) to 3pin pass-through adapter. Here's the thing: the fan has a weird combo of wire colors, and I don't want to cook it by hooking up the wrong two wires.

The colors are black, yellow, and white, in that order (or white, yellow and black, if you turn the connector around :p ).

The adapter has black, red, and N/C leads, in that order (N/C = not connected).

Do I need to switch the pins for the yellow and white wires on the fan-side connector, or am I OK as it is? (I can post pics if I'm being clear as mud.)
 
Just switch the yellow and the white wires on the header coming from the fan. What I was trying to say in my previous post is that black should be connected to black and white should be connected to red. Yellow shouldn't be connected to anything. Unless I'm not understanding your question correctly.
 
Does the fan have a standard 3-pin fan plug on it right now? If it works properly now, then the wires have to be in the right position, regardless of their color.

pwmcolors.png


A 3-pin is the same as this, minus the PWM wire. You should have ground on one end, 12V in the middle, and tach on the other end. People use the wrong color wiring on a surprisingly regular basis.
 
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