What resistance does the alternator need when going to the "1" wire for a LS alternator?

I have a AWW 57 Classic Update harness with a LS3 engine/ Terminator Max X ECU harness IF any of that matters.
I plan on ordering a LS alternator plug and adding in a resistor inline on the alternator plug wiring.

I gather it should be 470 ohms... What about the wattage, is 0.5Watt correct?

Thanks.