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Open Roads Forum  >  Tech Issues

 > Broken Cable - 12-volt accessories

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Grey Mountain

On the rez somewhere in Indian Country

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Posted: 08/12/19 11:44am Link  |  Quote  |  Print  |  Notify Moderator

Got a problem with an accessory wire in my coach - 2006 Discovery Pusher.

When servicing my house batteries, I noticed that a small 1/4 inch flat wire that connected to one of the positive terminals had corroded and broken off. Thinking I could just attach another copper fitting to the wire, I cut it - then found that there are six very small wires inside that flat wire. The wire disappears somewhere inside the innards of the motor home.
Don't know which 12-volt accessories are power by that wire. Anybody have an ideas?

GM


2006 Discovery 39S Tin Teepee
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dougrainer

Carrolton, Texas

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Posted: 08/12/19 12:33pm Link  |  Quote  |  Print  |  Notify Moderator

That is your Inverter/Charger BATTERY TEMP sensor. Just look up your brand Inverter/Charger and order a new one. The wires are a NETWORK cable wire. The Temp Sensor goes from the battery terminal to the Inverter/Charger. You will see a modular port with a Phone type modular plug. Doug

https://www.altestore.com/store/charge-c........96YL-4wIVyODICh2cZQqGEAQYAyABEgKsxvD_BwE

https://www.wholesalesolar.com/9901543/m........w3oL-4wIVV8DICh3KGgnqEAQYASABEgLPZ_D_BwE

* This post was edited 08/12/19 01:04pm by dougrainer *

CA Traveler

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Posted: 08/12/19 01:04pm Link  |  Quote  |  Print  |  Notify Moderator

It could also be a temperature sensor for solar.


2009 Holiday Rambler 42' Scepter with ISL 400 Cummins
750 Watts Solar Morningstar MPPT 60 Controller
2014 Grand Cherokee Overland

Bob


dougrainer

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Posted: 08/12/19 01:07pm Link  |  Quote  |  Print  |  Notify Moderator

CA Traveler wrote:

It could also be a temperature sensor for solar.


Please supply a Brand or Link for such a part. I have never seen such an animal on a RV solar set up. Doug

pianotuna

Regina, SK, Canada

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Posted: 08/12/19 01:47pm Link  |  Quote  |  Print  |  Notify Moderator

dougrainer,

Both my Blue Sky solar 3024 controller and Magnum 3012 inverter/charger have temperature sensors on the battery bank.


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp hours of AGM in two battery banks 12 volt batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

CA Traveler

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Posted: 08/12/19 02:07pm Link  |  Quote  |  Print  |  Notify Moderator

Doug,

My Morningstar MPPT60 has a battery temperature probe (RTS Remote Temperature Sensor). I suspect few mfg RVs with solar have a one, however.

Grey Mountain

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Posted: 08/12/19 02:25pm Link  |  Quote  |  Print  |  Notify Moderator

That cable is the Battery Temperature Sensor. Ordered the part through my local RV Fixit Shop. $18 or so.

Thanks for the information. Takes a load off my shoulders.
When it comes to 'lectric stuff on RVs, I am a very good woodworker.

GM

Grey Mountain

On the rez somewhere in Indian Country

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Posted: 08/13/19 04:14am Link  |  Quote  |  Print  |  Notify Moderator

I first called my RV Fixit shop, explained the situation to a technician. He said it was a power cable for 12-volt accessories inside the coach but had no idea which ones. Glad I asked the question here.

GM

dougrainer

Carrolton, Texas

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Posted: 08/13/19 05:36am Link  |  Quote  |  Print  |  Notify Moderator

pianotuna wrote:

dougrainer,

Both my Blue Sky solar 3024 controller and Magnum 3012 inverter/charger have temperature sensors on the battery bank.


The reason I asked was, I have serviced and replaced hundreds (maybe thousands) of RV coach batteries over the years and have only seen the Inverter/Charger temp sensor. I(we) do not install Solar systems. WE advise customers to go to the experts to get exactly what they require. The only Solar we actually install is when the OEM has prewired for a specific system and we then install those panels and inside controller. None of those has ever come with a Battery temp sensor. Doug

wa8yxm

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Posted: 08/13/19 06:32am Link  |  Quote  |  Print  |  Notify Moderator

That is a thermistor housing IT does not electrically connect to those six wires but rather to a component inside the housing (2 or 4 of them) and measures how hot the batteries are.. It can be attached to teh side of a battery or usualy to the negative terminal (Terminmal is better) IT runs to your charger be it a converter or inverter.


Home is where I park it.
Kenwood TS-2000 housed in a 2005 Damon Intruder 377


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