I have a '02 accord ex & will be buying a trunk lid from a salvage yard. Other than connecting the lights & trunk latch & changing lock cylinder.... is there any work that I'm not seeing? electrical will be just connecting plugs to plugs... just as I disconnect them from one, connect it to the other

 

should be pretty simple

 

Check whether it's exact, like another EX (not DX or LX).
Spoiler vs. no-spoiler, you'll want the matching springs that are down near the hinges.
Don't know whether the DX or LX have remote trunk release on the key? That should match too.