A different electrical problem, '03 Wind

All of a sudden, no brake lights, no tail lights, no rear turns, no fuel gauge, no power locks other than drivers door. i have read a lot about REM's and FEM's. Are we talking the same part or are there 2? One tech suggested it was a body control module, but Ford didn't have it listed in that verbiage. And if there are two of them, which one?

Any help would make my wife happy.

First off check the Battery.. These things act crazy when the batt starts to die. Have load test done at Advanced auto or Autozone. its free. 2nd if the battery checks out ok. Unplug the Battery for at least 30.seconds to reset the PCM-Bcm
To see if it will reset. But first check the battery out. After you have the battery tested post back. I have another reset test for the BCM..