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Old 10-11-2013, 08:29 PM   #15
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Installing Temp Sensor

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Originally Posted by c21bill View Post
Haven't heard back from Airstream but one issue that comes to mind: the batteries are contained in a sealed box. Need to somehow penetrate the box with the temp sensor lead so the box can remain sealed. This may be the reason that Airstream didn't use the temp sensors. Any ideas?
I just added a temp sensor for the new Blue Sky Solar controller I'm adding to my rig. I used a grommet that gave a reasonably tight fit on the temp sensor cable and then drilled an appropriate hole in the side of steel battery box next to the negative terminal on the rear battery in the box. See attached photo.

Enjoy,
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Old 10-11-2013, 09:12 PM   #16
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I just looked at the installation manual and noticed that the Magnum temp sensor has an RJ11 connector on the end. So it will take a larger hole on the battery box than I was able to use for my Blue Sky Temp sensor, which has no connector on the end.

After drilling a larger hole for size of RJ11 connector one would have to use some sort of sealant to seal the battery box. I would not recommend leaving large opening that defeat the sealed battery box.

I'm probably going to also add a Magnum Temp Sensor as I want optimal battery charging at all times. I use my Interstate in all kinds of weather with wide temp swings.
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Old 10-11-2013, 09:44 PM   #17
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You can easily cut the RJ-11 connector off of the cable, run it thru a smaller hole and then replace the connector.

A cheap set of connector pliers will do the trick. Just be sure that you get the orientation of the connector exactly the same along with the wire colors.

Plus, this will allow you to shorten the cable to the length that you need.

I find it totally reprehensible that Airstream does not connect the temp sensor, but then they could have continued giving you those POS Parallax single voltage converters!

OOPS! They still use them in the trailers. My BAD!
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Old 10-14-2013, 10:59 AM   #18
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Just heard back from Airstream Support and contrary to what the Magnum rep told me Airstream claims that they don't receive the temp sensors with the invertor/chargers. If anyone finds a deal on these, please post it. I checked one place and they wanted $32 + $20 shipping which seems a bit spendy for what it is.
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Old 10-14-2013, 12:51 PM   #19
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Here it is folks: I just ordered a Battery Temperature Sensor from a Company in Arizona called Tekris Power Electronics, Inc (wwww.tekrispower.com). You can call them at (877) 483-5747. I spoke to Shari and she is sending me one for $27 with free shipping. The Magnum part number is ME-BTS-15.
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Old 10-14-2013, 02:28 PM   #20
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Having been to the Magnum factory several times (most recently in early Sept. ) and watching the production line and packing operations, I find it rather hard to believe that Magnum would do a special packaging just for Airstream, considering that every other OEM that uses Magnum inverters gets the BTS included with the units they order.

I just opened one 20 minutes ago and guess what? The BTS was right where it always is.

Just my casual observation.
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Old 10-16-2013, 07:29 PM   #21
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Just received my Battery Temp Sensor from Tekris Power (ordered two days ago) and just finished installing it. Waiting for my phone guy to stop by and install an RJ-11 connector on the end. I cut the factory one off to fit the cable thru a grommet. Hoping everything works out as it's supposed to.
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Old 10-16-2013, 09:41 PM   #22
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I cut these cables to get rid of the excess quite a lot. Just be sure that you keep the end that you cut off and be certain that the RJ-11 plug goes on the cable in the EXACT same orientation, or it will not read properly.
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Old 10-17-2013, 02:53 AM   #23
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Thanks for the heads up Lewster, I did save the cut off RJ-11.
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