Web answer (1 of 4):

Fan yellow wire. A ground wire can never be used as a neutral, even though it connects to the same bus at the. Mount your bracket onto the ceiling and hang the fan on the bracket. If you have a ceiling fan, you will need to connect the hot wire to one of the outlets on the fan.

Connect the brown wire as a line from the fan to the upper end of the pull chain. Neutral wires are white or gray electrical wires. Most 12v fans still use red and black with the red connecting the 12v yellow psu rail.

I don't want the fan to have speed less than its 100%. If i have a case fan with 3 wires to connect to the mainboard and the yellow wire is the one intended to controll the fan speed, will the fan always go 100% speed if i just cut the yellow wire and connect it's connector to mainboard? Web i can't seem to find what kind of signal is sent through a fan's yellow wire.

Web a three wire fan adds a tachometer output to the two wire fan. What is the yellow wire for on a computer fan? There is only one small 3 conductor plug to connect te yellow.

On both, the black wire is ground, and the red wire is the + dc voltage supply. To connect your ceiling fan to existing wires, make sure that you have the right fan hardware and cut off the electricity leading to those wires. With the fan spinning at 6000 rpm, you would measure a 200 hz pulse rate (6000 rev/min / 60 s *.

The gpu fans only have 3 wires, and assuming the red and black wires are power and ground which is almost always the case, yellow must be tach. Web connect the green / yellow wire as ground wire from the fan to the household earth wire. Alt.comp.hardware.homebuilt ( more info?) have 2 90mm fans connected to 12v fan leads from power supply.