Yesterday my trailer lights were working when I went to go home on my 06 Forester. When I got back home the trailer lights would not work. Later I noticed the radio and clock did not work. I brought it to the dealer and they replaced a fuse which was in the engine compartment. I brought it home hoping the problem was fixed. Now the driver side trailer light on the trailer harness is live. Live as in always on (even with all the lights off and the Subaru turned off). Does anyone have any ideas on what could be wrong before I take it back to the dealer tomorrow?