I'm going to run 3 gauge cables from the battery to engine (start/run), i will be running 4mm2 (25amp) cable from the battery to the lower consoke where the power post + - will be than i will be running 2.5mm2 (7.5amp) cable to the switches, fuse block, and accessories
Items i will be running
Fish finders 1.8amp x2
Front light back light seperatly wired/switched 1amp each
Both nav and anchor light pull .5amp
Cabin lights x2 wired together pull .5amps
Mobile phone usb charger 2amps
Bilge pump 2.5amps
Bait tank pump 3amps
All above will be on a button switch on/off also every accessorie will be on its own circuit's from the power posts but the usb charger will be connected live without a on/off switch incase the switch is faulty and have no power = flat phone battery in a emergency