Hello,

I need to install a USB charger on console and spent some time trying to find a wiring diagram for 2013 TZX 170 Skeeter with F115 Yamaha (Internet, Plano Marine, etc.) with no success.
The problem is that this boat has no fuse panel and all relays are just hanging on the wiring ball of spaghetti under console. I need to find power wires which will be controlled by power cut-off switch on console.
The charger will consume up to 4.5 amp output so I want connect it right.

All diagrams I saw stated that I should look for Red (hot) and black (ground) wires, but it is not easy to locate them in this mix. Except for red coming to (and going further) power switch. But boat does not have easy ground like a car :-).

Any advice will be highly appreciated

You could just run a 12 gauge pair of wires straight to the starting battery. Install an in line fuse holder close to the battery and you'll be done. A fish tape would make quick work of running the wires. You could even install a switch if you wanted to cut it off.