BCB has explained the two options:
1) Sump area feed. In my 2019 Classic, the 6 gauge troller wires run from the battery compartment, through the sump to the front. I assume it is the same in yours. You could disconnect one of the troller wires at both ends, attach (tape well) your new wire along with a piece of rope to the disconnected troller wire in the battery compartment, and pull that assembly to the front. Detach your new wire which is now at the bow behind the bow panel, and then just pull the rope with the troller wire still attached, back to the battery compartment.
2) Starboard side feed. This is how I have done it in all four of my Cats, and most others do it this way as well. To get a wire from the battery compartment to the console, removing the vent cowl, like BCB mentioned, makes it much easier to fish to the console. As well, remove the four screws on the panel that the shifter is attached to, and just drop it down to access behind it. Be careful with this. Once the wire is in that area behind the panel, it is easy to fish throught the rod locker to the bow.