Has anyone had the plug-in head (the thing with the electrical prongs on it) snap off the power cord that goes to their block heater? I'm in the middle of some pretty cold weather, and right when I need it most, the silly thing snapped right off! In reading through other post with pictures about how to replace a block heater, I noticed that the electrical cord seems to be hard wired or soldered right onto the heater unit - you can't just buy a new cord and plug it into a receptacle on the heater, like you could on my old VW Golf. So is there any way to neatly and safely splice a new prong ending onto the existing cord? (BTW, I have a 2008 5.7 litre Tundra, if that makes any difference).