Essentially, I have an 8 ga. wire that feeds power from the 1 ga. cable that runs to the starter up under the front-left fender.  This 8 ga. cable runs through a 50 amp fuse and to a 5-pin Molex connector under the factory fuse-box in the front-left corner of the engine compartment.  As a result, this Molex connector provides a source of constant +12v power in the engine compartment.  At present, I'm using this connection to provide power to the various relays seen in the photo below.  These relays control both fan circuits, as well as N2O and the IC sprayer (which have not been wired into the relay harness.).