10K Ohm resistor is more than likely OK. I've attached a basic working/tested schematic for the RFP12N10L (similar MOSFET to yours) to illustrate.Thanks for the info, the pull-down resistor, would that go between G and S on the mosfet, what value resistor would I need?
Not quite that simple. The voltage you found is the forward voltage (Vf,) or how much voltage will be dropped across the input. The remaining voltage must be dropped across the resistor, and you'll use this amount, along with the desired current through the input, to choose your resistor value. There should be a spec in the datasheet regarding forward current on the input - maybe a few, like max and nominal values.
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by Jeff Child