A generator is going to struggle to service a radiator fan and an electric water pump IMO.
An alternator is simple to wire in if it's a modern internal regulator type. You'll have a maximum of three wires -Battery, field and sensing. Or just the Battery wire if you choose a one wire alternator.
Stuart.
Last edited by Stuart_Giles; 11/24/2009 6:22 PM. Reason: spelling!