Speaker wire mystery

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Emerson

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Jul 28, 2021
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Fluid Motion Model
C-30 CB
Vessel Name
Emerson
I am hoping someone can demystify the speaker wiring on a 2022 R-29CB. It either does not match the wiring in the manual or perhaps the drawing in the manual is not meant to provide this detail, instead referring to the MFR schematic, …which is not included (or I failed to identify).

What I am trying to do:
I would like to divide the three sets of outdoor speakers and will gladly purchase another amp to do so. 1st preference, CB speakers stand alone, cockpit & forward continue to be paired. 2nd preference, CB and cockpit are paired and forward stands alone. We would simply like to enjoy some quiet music during cocktail hour on the bridge. The cockpit speakers don’t “spill out much”, but the forward outdoor speakers could bother neighbors at the dock. (Yes, we do have a bluetooth speaker, but with six outdoor speakers, it seems silly to keep thing on the boat.)

Currently, all interior speakers are driven by the Fusion unit and the Pyle Amp drives the three outdoor port speakers via channel one and three outdoor starboard speakers via channel two. Visible (in the compartment) amp output wires are connected to two speaker wires each, not three. I am guessing that there is another set of joins/splits later in the harness.

My questions are:
Considering the wires visible in the stereo/amplifier compartment, which speakers are paired (I.e. on the same wire)? 1. Bridge/Forward, 2. Forward/Cockpit, 3. Cockpit/Bridge? Hoping for #2 or #3
Is there a power concern regarding the 12V power, if I were to add another amp on the same circuit? The wires themselves seem oversized. Keeping the same fuse would keep us from turning things up too much and of course protect the existing wiring.
(However, future owners may blow the fuse and increase its rating, …perhaps inadvertently causing an issue)

There is an extra pair of 12V wires with open connectors laying in the compartment, begging to be used. What are they intended for and what fuse does the 12V+ go to?

Thanks a bunch!
 
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