Thanks stev!
Currently I have the first two solder pads connected to my miniNG.
1) Gnd = Ground
2) Variable motor voltage (Vm) (6 to 12 V, approx 1.0 A max.)
The third pad is connected to my T-balancers analoug sensor hubs flowmeter ports.
3) TACH
I don't really understand how to use the fourth solder pad.
Would there be any advantages using it?
4) Vp = +12 V (runs control circuit, approx., 50 mA max.)