Tones00

So I bought the mishimoto 14" fan and shroud for my 2000 gt. The stock system is a three wire setup. Red for low speed and orange blue for high speed. The Mishimoto fan only has one speed and the folks from Mishimoto told me that you wire the fan using both the red and the orange blue wires. I'm questioning those directions because it seems to me that when the low speed power is on that it would back feed up the high speed wire and burn up the relay. Any thoughts?