I found these while cleaning my 08 FEH today. Do you know what they are for?

 

Do us a favor, flip your seats up, remove the carpeting to expose the hybrid battery and see if the "wire" connecting to it is like what you see in the photo below:
fordinternalbatteryheater2.jpg?t=1219357603

 

The one on the drivers side is access to your fuel tank sender....

 

It looks about the same to me, mine may have more and or different colored wires in the harness. Here is a picture of mine.

 

Thank you for the photo. The 2005-2007 FEH models that have engine block heaters also have a connection to the hybrid battery heater. In 2008 FEH engine block heaters, this connection was missing. Thus the question on whether the 2008 FEH had wiring to the hybrid battery heater.