I wired up my Trailer Hitch yesterday and was able to get the indicator and stop lights up, but Before I finish up I was wondering if anyone knew which wire powers the tail (driving) lights? The connector has a brown wire with a red stripe, and a black wire to choose from. The other two were a brown one with a green stripe that powered the turn signal, and a white wire with a black stripe that was the stop light.

I think the brown/red is what you are looking for. The black wire may be ground. You could test the wire with a test light to verify that.