The closest one to being "L" shaped (mine has a curve in it) is the wire in the lower photo and it is also the longest of the two wires. Which would make since. The shorter wire as in the top photo would go to the flap in the first photo and the longer wire to the flap in the second photo.

If you look close at the photos you will also see that the mounting "bracket" for the heater control unit has a round hole and in the lower photo it has an oval hole.


Hope that helps. Joe