Cap off the branch circuit wires that connected to the second fan by screwing plastic wire nuts over their stripped ends.
Wire 2 computer fans together.
So do you think if i connect two fans to the header y splitter.
To do this get the positive wires of all the fans and connect them to the positive wire on your adaptor.
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On these 4 wire computer fans i have found that some times they require an input to tell it how fast to spin so simply supplying power to 2 of the wires will not work if you have a 3 wire fan however you can supply power to the red and black and leave the white disconnected.
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To do the job properly will probably require some soldering but your project doesn t require any delicate handiwork.
Two fans is usually ok but i would not attempt 4.
As an extra safety precaution secure the wire nuts in place with black.
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