nhamm & BiteMeGumby- it all depends on what you’re running on that circuit. I ended up running most 16 gauge and some 14 gauge, I used the stranded marine wire that had both the black and red wires connected together. Then I used colored electrical tape on both ends to mark what circuit the wire was ran to. These are the circuits I ran in my 17′ tiller boat.
Bilge pump – 3 amp fuse (16ga. wire)
Aerator pump – 3 amp fuse (16ga. wire)
Recirculating pump – 3 amp fuse (16ga. wire)
Running lights (bow and stern) – 3 amp fuse (16ga. wire)
Interior lights – 3 amp fuse (16ga. wire)
Electronics – (14ga. wire) I have one at the bow and one at the stern both are fused next to the unit head.
USB charger socket 1.5amp/3amp (16ga. wire) – directly from the battery
Cigarette socket 5 amps. (16ga. wire) – directly to the batteryFor my ground I ran 1 12ga. wire from my battery to a terminal block, as well as a 12ga. hot wire to a terminal block for the power to my switch panel. I really like keeping the number of wires connected to my battery to a minimum. I also add in a main disconnect to the switch panel.
I completely replaced all of my wiring including the trolling motor and a new gauge cluster with all new switches, I used marine terminals with heatshrink on all of my connections. All said and done I had $78.50 in materials.
If you have more questions about my build PM me.
Thank you, this is what I was looking for. I’ll pM you.