Hi
Just mentioning I thought I had trouble with the same, after much fuse pulling as the fuse layouts didn't seem to tie up with my model I realised it was the non Honda double adaptor in the cars socket that had blown it's 5 amp fuse.
Anyway it was a Yellow fuse (I can't remember the rating but biggish possibly 20 amp). I pulled all the yellow ones and none were blown hence a better look at the adaptor. The owners handbook says the fuse layout map was inside the fuse cover or on the bulkhead. not in my car, no fuse cover either.
Good luck John