Power issue

[Puddle pirate 198]

My buddy has an 09 pantera 2 never had this issue before. He got a new cranking battery now his boat won’t fire up unless he unhooks all his livewell and graph power wires. It won’t even try to turn over. It just beeps then like there’s not even a battery back there. He can unhook those wires and it’ll fire up strong. He first thought the battery was to small so he went and traded for a 29 pro guide. Any advice would be great. Thanks

[Bass Cat Boats]

We answered on your other post, it’s the tightness on the cable nuts usually.

[OldTimer57]

And DO use nuts, not wing nuts. They need to be tight as the optis suck power like a wino sucks wine.