Gc Extreme valve wiring..

Just curious if anyone know what amps the gc extreme 450 valves draw?  just tryin to figure out what guage of wire to use on them?
 
 
Thanks
Trevor

I have no idea how many amps they draw but I've always used 12 gauge speaker wire. Never had a problem with it and you have one wire for power and one for ground. Keeps from having wires hanging everywhere also.