Viper fan install

[a10beav]

I'm almost done installing a Viper fan into my '02 Corvette but I"m not sure about the wiring. The Viper adaptor takes 3 wires, a light green, a dark green and a black wire; the Vette only has 2 wires going to the fan though.
I'm trying to finish this today, how should I connect it?

[t/as&dds]

Is it possible that the Viper fan has 2 speeds? One wire for low and one for high? If that's the case, then I wouldn't imagine it would hurt to connect it to the same power source.

[a10beav]

Yea, it has two speeds. I found a wiring diagram on-line and I talked it over with a few guys here about the install. The fan pulls a lot more power than stock, so I need to hook up relays for the two speeds and a circuit breaker as well. I've ordered the relays, so hopefully I'll get it finished tomorrow.

I thought the tough part would be making brackets for the fan...