Installed a set of manual switches to activate the radiator and engine cooling fans. The installation went fairly well but followed the original directions provide online here and although the wiring diagram was correct the photos of the relays were not. I was one relay off which caused the internal AC cooling fan to come on upon immediate insertion of the key and to stay on upon it's removal. A quick check to the Bentley Manual straightened out my problem.
I will eventually follow the Radium King's suggestion to use a 996 Batwing and switches to make this look more OEM but for now I think these will do. Thanks to all that did the original writeups and diagrams!
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