I'm with f-two-fiddy. Alternator harnesses are no longer supplied by Ford, so junkyards are the only option. I planned to have mine rebuilt, but the shop half-a$$ed the job so I got a little creative on my own and will be redoing it CORRECTLY. All the connectors are available for order from parts stores (or you can find the catalogs and order them yourself), and the other parts are just normal supplies like heat shrink, electrical tape, and conduit.
Mike