So Confused!?! Electrical Problem!

Found the problem, the positive battery ring terminal attached to the cable leaving the battery was not getting power to the electronics fast enough because underneath the large battery cable there were smaller dirty ring terminals slowing down the current. Thanks for the help! And the boating down here is very nice!
 
Well no wonder .... those electrons don't like to flow up hill anyway ... and seeing as how you live where everything is upside down and backwards ... it's amazing it worked at all!

Fire that electrician and go get you a bottle of electron acceleration lotion - and a wire brush! :grin:
 
Yes but all four batteries converted to 12 volts.
 
Oscarlyy said:
Hello, I have a sea ray 345 sedan bridge that has a very annoying electrical problem. First off I have all new battery's in the boat, 4 GR 27 6 volt house batteries, 1 GR 27 starting battery and 1 dedicated GR 27 bow thruster battery. All the house batteries read 6.3-6.4 volts, I don't think the batteries are the problem.
The problem I'm having is all the lighting, all the navigation equipment, all the water systems, head systems, trim tabs, horn etc... Has a super low voltage coming to everything. I pulled one of the bulbs out of the cabin lights and put a meter to it and it read 3.3 volts
All lighting is very dim and when you turn somthing else on while a light is on it dims even more to barely any brightness. And the navigation equipment upstairs flashes and beeps "LOW BATTERY"

Lastly I have a problem with the bow thruster, I was driving at a slow speed in the harbour and all of a sudden the bow thruster turns on by it self without warning, and I couldn't turn it off from the controls. I ran down stairs and hit the bow thruster emergency shut off and haven't looked at it since.
ANY AND ALL HELP IS APPRECIATED PLEASE!!!

Thank you guys in advance, I really need help with this one :huh:
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Man I’m having some bloody issues with my old girl.89 sundancer 300. Could it be just a positive lead. Tried all ground wires. When I’m plugged into shore and my battery charger on everything works great but when I turn the battery charger off apart from my outlets and my fridge everything’s really dim. Cleaned all wires and connections and had the batteries load tested everything fine
 
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