You guys all crack me up. As far as I can tell, most likely Taylor makes the wires for Motorcraft. The only difference between them and Motorcraft are the wire cores. Motorcraft are carbon and Taylor are spiral core. Heck the Taylor ones even have the "Ford" logo embossed in the boots just like the Motorcraft ones do. Not to mention the odd black colored boot for which I have yet to figure out the purpose. lol