I Don't know if the boat is stored in Norwalk or jersey, if the former-that's where I'm based. Happy to lend a hand.
The bulge looks to be in the liner mold. On the Starboard side the trough is in the way I think?
Look up New Wire Marine. They have a bunch of diagrams on their site that were very helpful for me. Fair prices too. I used 14ga for all my lights, pumps, switches, etc. 10ga for the supply to the switch panel, 8ga back to the porta bracket pump, and 2ga on the batteries and from the switch back to the motor. I could have gone with 16 or 18 for a lot of it but for the small price difference I figured bigger wouldn't hurt.