2001 Adventurer stereo decks blowing fuses

[ChadO]

I have a 2001 Adventurer with an outdoor entertainment center. As we left this past weekend, both the interior deck and the exterior deck blew their respective 10 amp fuses on the back of the each deck. Now, as soon as I put a new fuse in either deck, they blow as soon as I plug the deck in the wiring harness. Any ideas where to look?
I've checked the fuses behind the steering wheel and everything look good.
Any ideas are much appreciated!!

Thanks in advance!!!