Ok, i am a ford certified master diesel tech and a boat enthusiest. Every 6.0 is equipped with a block heater but not a cord. you need to just order the cord and follow the picture in the bag to install it. it can be a bear getting it throught the cradle. and i would only reccomend the ford genuine cord. your truck is not equpped with the cold weather package. i doubt you lost a fuse. but if you are going to replace the alternator go to an o'riley they offer a higher amperage alternator for less money.
also, everyone on here feel free to pm me with questions if needed i live and breathe the 7.3, 6.0, 6.4 and the new 6.7 It is all i do each and every day. i would love to review this entire thread and help but you guys seem to all be pointed in the correct direction. the 6.0 can be a great truck and ford is superior in initial quality. you just have to get over the little kinks. also, if you are close to me i can install an egr block off for half the cost of the kit. i have a talented machinist that makes stainless plugs in the many many egr coolers i have under my toolbox. that takes care of many things and brings them back to to not swallowing egr and acting more like a 7.3 I also love the 6.0 so much that i fix them and drive one every day.