Wiring question positive from battery to dash

[gdhall]

I'm trying to add a thicker positive and negative from battery to dash to help with the voltage drops. Does anyone know which wire is which at the bilge bypass switch? I'll attach a pic of front of switch and one of back. I'm fairly certain the top is positive to bilge.

2003 SANTE 210 limited

[SilentSeven]

I don't believe upgrading this wire set will help with voltage drops. Most all of the accessory power in this era of boat is switched via the PME box which has a direct feed from the battery.

If you provide more details on where you're getting low voltage, can help more.

PME looks like this:
https://nautiqueparts.com/engine/eng...ker-pme-boxes/

[gdhall]

Doesn't the PME get uts power from here? Otherwise what's the point of the cut off switch? I can def run another positive to that PME. But wouldn't it cancel out the all boat off switch?

So I ran a new negative to the breaker box, 6 gauge from battery and I'm getting 15v at battery, 15 at breaker box but they dang dash says 12.1. Where the heck does perfect pass get its power can I just piggy back a wire straight to it with a fuse? I hadn't connected the positive yet but it's such a small connection at the bilge cut off I'm wondering if I should by pass it totally and go straight to the breaker box? Everything is on perko switches anyway. Any help?? I feel like if I tap into 12 gauge to connect the 6 gauge to the switch it defeats the whole purpose of running a thicker wire or will that one pinch point not matter as much

[gdhall]

I do know on the switch the bottom goes to positive at breaker box and the middle goes back to positive at the battery.