12v power behind rear seats? For subwoofer

[Yondu]

I believe Kicker makes a plug and play rear subwoofer for Bose trucks. I assume there is a fused 20-30amp 12v hookup? 

 

Any info appreciated. Hoping to do one of these small under seat subs that are usually fused at 20amps, I'd like to not run a power wire since it seems like there may be an appropriately sized wire there.