3270 Battery Switch Operation-gctid815849

[colbournee]

Can someone explain the proper operation of the Battery switches in 1987 Bayliner 3270. I have 3 batteries and 3 switches. An accessory battery switch, an engine battery switch and a 1, 2+1, 2 switch. It appears that the 1, 2+1, 2 switch only pertains to engine starting. Is that correct or not? I assume that because with the 1, 2+1, 2 switch in the off position the accessory switch still operates the accessories.

[Guest]

From the factory, there are only 2 switches. On/off for starting & house battery. The 1/2/on/off is not factory.

Impossible to say how it's hooked up.

[Ruffryder]

No correct way of doing this.

Similar system in my boat, 3banks, 3 switches... engine 1 switch, engine 2 switch, house bank switch.

[colbournee]

Here is the setup in my boat. I assumed it was factory. The middle one is engine and the one on the right is the accessory. As I mentioned the switch on the left do not turn off the accessory.

[Hamnavoe]

Probably a parallel switch, allowing you to link engine and accessory banks in parallel. Useful only really if your engine bank fails.

[mmichellich]

"colbournee" post=815865 wrote:
Here is the setup in my boat. I assumed it was factory. The middle one is engine and the one on the right is the accessory. As I mentioned the switch on the left do not turn off the accessory.

[attachment]38647 wrote:
P1070667.JPG[/attachment]

Suggest you take the time to follow the wires going to the left switch in the photo, it is not factory. It is anyones guess as whst it is for.

[diveguy]

"Hamnavoe" post=815866 wrote:
Probably a parallel switch, allowing you to link engine and accessory banks in parallel. Useful only really if your engine bank fails.

That would be my guess as well but you'll need to chase the wiring as suggested. Draw a diagram when doing this may help as well.

What it the toggle switch on the far right?

[floatyerboat]

Generator ?