Battery Layout

[QT1]

1990 350 Sundancer. In this photo, which is: house battery, engine crank one, engine crank two. Thanks. Fortunately I just replaced the factory battery charger, so I can remove the jumper cables from the second to third battery.

 

[Lazy Daze]

At 30+ years old, any number of changes could be made. Do some "diagnostics" so you know what battery corresponds to what position on the switches. You can physically follow the B+ leads to the switches. Or do a process of elimination... remove one negative cable at a time and see what no longer works based on switch position.

FYI... you're missing battery hold downs. They are important.

 

[QT1]

At 30+ years old, any number of changes could be made. Do some "diagnostics" so you know what battery corresponds to what position on the switches. You can physically follow the B+ leads to the switches. Or do a process of elimination... remove one negative cable at a time and see what no longer works based on switch position.

FYI... you're missing battery hold downs. They are important.

LOL, these were the pictures posted by the seller I purchased the boat from. There were allot of small details missing before purchase. That situation has been corrected, especially for any CG Auxiliary inspection.

 

[Stee6043]

LOL, these were the pictures posted by the seller I purchased the boat from. There were allot of small details missing before purchase. That situation has been corrected, especially for any CG Auxiliary inspection.

Did you in fact "remove the jumpers" from the second and third battery? If so, I think you should put that back. That would be a proper way to create a "bank" for that set of batteries. I assume you realized that if you were down there looking at those batteries? Without those connections that third battery does a whole lot of nothing