Okay, so now that, "I got my Cummins back"... Can anyone tell me how to tell if the original buyer purchased this truck with the "Engine Block Heater" option? 
Also, I have heard rumors that even if the option wasn't purchased, it is basically already installed, but needs the cord/plug assembly & that can be purchased separately and easily plugged in and wired as you desire... Anyone have any truth to dispense about any of this???
As always, appreciate any feedback from my own personal, infinitely detailed Owner's Manual (aka TDR Members)? Thanks, guys!
Mark

Also, I have heard rumors that even if the option wasn't purchased, it is basically already installed, but needs the cord/plug assembly & that can be purchased separately and easily plugged in and wired as you desire... Anyone have any truth to dispense about any of this???

As always, appreciate any feedback from my own personal, infinitely detailed Owner's Manual (aka TDR Members)? Thanks, guys!

Mark