Hi there. Long-time reader, first time poster. I recently had the audio (#5 by driver's left foot) 20A fuse blow out. I replaced it and everything was fine for a few days. It then blew out again and now immediately blows a new fuse even with the car completely off with no key in the ignition.

I have a basic working knowledge of wiring, but was hoping to get a little feedback of where to start looking. I just ordered the service manual online, but will be a few days before I receive it. Thanks in advance for the suggestions!

PS, this is for an 04 auto TL w/ Navigation. Navigation still works fine, only audio affected.