False alarm... The RCA plugs are a lie.
 

Disregard. There were no RCA plugs. Just capped splices that looked like RCA plugs until I unbound them from the harness. My bad :( Carry on... nothing to see here.

Subd

Hmm.. no one? I poured over the BRZ wiring diagram last night and there's no mention of these connectors anywhere. I also pulled the trim from my trunk near the amplifier and didn't find anything. I'll connect my fox and hound this weekend and see if I can figure out where the wires are routed.
-Matt

Are you sure there is an RCA connector underneath, not just plastic cover for wires?

You are correct. My bad... False alarm :( they're just capped splices. The caps look exactly like rca plugs with little rubber covers on them

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