battery ground fusing

S

sixesriver

Member
Joined
Jul 5, 2018
Messages
10
Fluid Motion Model
C-28
Hull Identification Number
FMLT27248313
Vessel Name
CURRENT OBSESSION
MMSI Number
FRN002768
On my 2013 R27 there is a fuse on the yellow (negative) cable between the house batteries and the thruster/engine batteries.
Is this fuse for battery short circuit protection between banks?
There are also three yellow wires leaving the fuse block, marked 1+, 1-, 1. What are these wires connected to and for what purpose?
Thanks.
 
sixesriver":17wi2ig9 said:
On my 2013 R27 there is a fuse on the yellow (negative) cable between the house batteries and the thruster/engine batteries.
Is this fuse for battery short circuit protection between banks?
There are also three yellow wires leaving the fuse block, marked 1+, 1-, 1. What are these wires connected to and for what purpose?
Thanks.
Click to expand...

Hello,

Here is a link to the owners manual for the R27, viewtopic.php?f=7&t=1550, it has wiring diagrams in there and you could compare that to what you are describing. However, it sounds like this may have been added after the sale? Are you the original owner?

Thanks,
 
Thanks for your reply Kevin.
See the attached photo of the fuse.
I am the second owner of this boat. It is possible that the previous owner had this modification added. It does not appear in your schematics.
So far I haven't been able to trace the smaller yellow wires because they disappear into a wire bundle in a sheath.
Thanks,
John
main.php
 
Just a guess, but does your boat have a Battery Monitor? it looks like it could be a shunt for battery monitor. Mine is installed in the Negative cable.

I hope that helps.

Rocky
 
sixesriver":14kpzhvd said:
Thanks for your reply Kevin.
See the attached photo of the fuse.
I am the second owner of this boat. It is possible that the previous owner had this modification added. It does not appear in your schematics.
So far I haven't been able to trace the smaller yellow wires because they disappear into a wire bundle in a sheath.
Thanks,
John
main.php
Click to expand...

The item in your photo is not a fuse. That is a shunt used by a battery monitor to measure current. The small yellow wires run to the battery monitor. This would be an aftermarket item added to the boat.

Curt
 
Thank you. Indeed I do have a monitor. Thanks again for your reply.
John
 
Thanks Curt. I do have a battery monitor. Thanks again.
John
 
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