Being a auto tech, I have seen my share of problems with OPTIMA batteries. I run a dedicated #8 gauge wiring to the front of my boat. Have a aux fuse panel mounted under. This is where I tap off for all front electronics, spot light. I have one at the console also. If you run separate wiring, go bigger than the recommended gauge you won't go wrong. Some auto parts stores will have battery cabling on a reel that they can sell by the foot. I did this when my 899 would just shut down then restart all by its self. Never did find a fault, then it just fixed its self.