I found this 12 v dc fan in a surplus store ( cheap)
it has 3 wires red, black and white
I would think black is " + " and the red " - " the white ??
do I have it right?
I know this is not an electrical forum.... but you guys have been building these great setups... somebody should know.
I e-mailed the company and they gave one crazy answer
quote"
Third wire lead=Sensor
Sensor : rpm, alarm, lock rotor...
If you don't have any reading/monitoring for the fan, the third wire can be leave alone. " end quote
Cheers
Peter