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Old 08-31-2017, 10:25 PM   #1
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2016 25' Flying Cloud
Fairfield , California
Join Date: Sep 2016
Posts: 855
Need to run small gauge wire from Batteries to inside trailer

I am trying to install a battery monitor into my 2016 Rear Bedroom FC and am not sure how to run the wires from the Battery to inside the trailer. They are small 16 gauge wires for a Merlin Smartgauge Battery monitor. I see where the wires go in under the trailer but can't tell for sure where they come in. Attached are two pictures of what I see inside.

Looks like they come in under the little box in the cubbyhole. What is the best way to run the wires in, drill a hole in the silicon plug, push them in from the outside and then reach with what? to try and catch the wires?

Tried searching but no luck.

Thank you,

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Old 09-01-2017, 01:28 PM   #2
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2015 28' Flying Cloud
Newtown , Pennsylvania
Join Date: Jan 2015
Posts: 221
I'm not trying to be a wiseguy, but if you are having a problem figuring this out, you need to get someone to help you.


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Old 09-01-2017, 03:09 PM   #3
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1992 29' Excella
2010 22' Interstate
Van By The River , Georgia
Join Date: Feb 2002
Posts: 1,920
We installed a battery monitor system that used small wires (phone cord) to connect the precision shunt the digital readout. In our installation the shunt needed to be near the batteries (at the tongue of your trailer presumably) so the closest place to put the digital readout would be near the front of the rig near the couch (?). That shouldn't be too difficult. I just left the digital readout near the couch in our trailer. You could install it in an overhead cabinet if you like. Do you really need it to be in the center of the trailer near the other electrical devices? If so, get some professional assistance if needed from your local RV dealer.

A friend wanted to avoid all the problems of wiring etc. and used the following and he monitors his batteries via a smart phone app.
Lucius and Danielle
1992 29' Excella Classic
2005 Chevrolet Suburban K2500 8.1L
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Old 09-01-2017, 10:48 PM   #4
2 Rivet Member
2013 25' Flying Cloud
Middleton , Idaho
Join Date: Nov 2012
Posts: 95
When I installed a battery monitor (Trimetric) in our 2013 25FC rear bedroom, I shoved the wired through the factory calking, where the main battery cables enter the trailer under the front street side quarter. I think I used a blunt screwdriver, or something similar, to make a small hole without damaging the existing wiring.

For the project I also removed the couch on the street side to provide better access to work since I was upgrading and relocating a dealer installed solar controller at the same time.

It took a little time to figure out, but wasn't that difficult. I put the shunt in the battery box.
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