House wiring batt.-gctid809726

[Monkeyman]

Trying to install batt switch and ACR clean up wiring about ten wires with eyelets that are wired directly to battery. I installed add a battery switch from my engine battery and starter. Boat fired up so no problems there. Wired all fused wires to house battery positive all negatives to negative battery and nothing works as far as lights , electronics. Battery switch off position . Turned on battery switch to on and everything working I'm a little lost shouldn't house battery power everything with wires being hard wired from battery? Traced wires from start battery back to motor starter and looks as though maybe house hot might be wired there which would explain why with batt switch off nothing, turn on everything working this sounds odd to me.Any thoughts about this 1990 ciera 2655

[builderdude]

"Monkeyman" post=809726 wrote:
Trying to install batt switch and ACR clean up wiring about ten wires with eyelets that are wired directly to battery. I installed add a battery switch from my engine battery and starter. Boat fired up so no problems there. Wired all fused wires to house battery positive all negatives to negative battery and nothing works as far as lights , electronics. Battery switch off position . Turned on battery switch to on and everything working I'm a little lost shouldn't house battery power everything with wires being hard wired from battery? Traced wires from start battery back to motor starter and looks as though maybe house hot might be wired there which would explain why with batt switch off nothing, turn on everything working this sounds odd to me.Any thoughts about this 1990 ciera 2655

Yes, the house loads are supplied from the stater motors main lug (where battery cable connects) so either battery selection at the MBSS will supply power.

[2850Bounty]

"Monkeyman" post=809726 wrote:
Trying to install batt switch and ACR clean up wiring

[color]blue wrote:
Question: are you wanting to install a battery switch, as in OFF/ON, or a battery selector switch, as in OFF/#1/ALL-BOTH/#2 ?[/color]

about ten wires with eyelets that are wired directly to battery.

[color]blue wrote:
Not good!

In my world, we should see battery cables ONLY connecting directly to our batteries. [/color]

I installed add a battery switch from my engine battery and starter. Boat fired up so no problems there.

Wired all fused wires to house battery

[color]blue wrote:
Again, I would suggest battery cables ONLY go directly to batteries.

Otherwise, we may end up with something that looks like a Rat's Nest: [/color]

[attachment]36482 wrote:
Good rats nest image.jpg[/attachment]

[attachment]36485 wrote:
Battery rats nest of the year.jpg[/attachment]

positive all negatives to negative battery and nothing works as far as lights , electronics. Battery switch off position . Turned on battery switch to on and everything working I'm a little lost shouldn't house battery power everything with wires being hard wired from battery?

Traced wires from start battery back to motor starter and looks as though maybe house hot might be wired there which would explain why with batt switch off nothing, turn on everything working this sounds odd to me. Any thoughts about this 1990 ciera 2655

[color]blue wrote:
Here are some 12 vdc marine electrical system icons that I use.

Would you be able to put together a schematic for us that will show your existing scenario? [/color]

[attachment]36483 wrote:
MBSS and schematic icons 3.jpg[/attachment]

[color]blue wrote:
Perhaps something simple like this one but showing your existing:[/color]

[attachment]36484 wrote:
MBSS and Negs w ACR.jpg[/attachment]

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