Yeah, you had it running at 5 volts, if you used the red line.
BTW, you might not be able to run it at 12 volts, because typical PSUs don't provide enough power (amps) to run it.
On a seperate note, I picked up a Hayden radiator fan, because the one in my car was dead, and I needed a slim replacement (long story). The unit is hooked up to a relay with contacts rated for up to 30 amps
