Yeah dude you will be aright. I took the Intel Stock heatsink fan from my grandmas 5 year old peoplePC built machine. It had only two wires but they are the same as any other. +12 volt line for power and the ground, usually the 12volt is red and ground is black, yellow wires are usually RPM detectors in a 3pin power connector case. Now, on my motherboard the pins go like this
1power, 2 ground, 3 rpm detection
However, on the Fan I stole from the intel machine the wires were backwards meaning I couldn't slip it on the little 3pin clip to the motherboard like it should. I flipped to the connector from the fan backwards and was able to force it on the 3 pin clip and it gave the fan power.
Basically all you gotta do is look in your manual at the available 3pin clip on your motherboard that you want to attach it to and find out what each pin is. Then when you know that just make sure the +12v red wire from the fan goes onto the pin thats designated +12v
Hope that makes sense, it's kind of hard to describe what I did, but like I said you just gotta get +12v line to it. Hell you could just get a wire, tie it to the +12v pin on your motherboard and splice the wire to the correct wire on the fan. But yeah enough talking and options or I might start confusing myself lol
But yeah, I connected a 2pin connector from a fan to the 3pin power connector on my motherboard. You know how it has little edges to guide it? Well that's where I turned the fan connector backwards, the edges that normally slide along it had to stick out the opposite way so that the +12v line lined up. Good luck