On a Block Heater for the 6.0L, should be one in it already. You will just have to get the cord from Napa cost around $ 20.00 then plug cord into block and then run your cord to front or rear of truck. Of course you can buy same cord from Ford for around $ 100.00. Check here for older posts on Block hearter cords etc, they will have the part # and location of where to put it all. I did mine this way back in early 06.