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Old 02-21-2020, 09:02 AM   #21
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“Yes, that is right. The power from the tow vehicle charge line comes in downstream of the battery isolation switch (at least on our trailer). Meaning when plugged into a properly wired tow vehicle it is live and power to the trailer is unaffected by the switch. Easy enough for owners to check on their trailer by ensuring no shore power, hooking up their 7 pin, turning on their tow vehicle and flipping the isolation switch. If any 12V lights stay on in the trailer then obviously the isolation switch is not killing the power from the tow vehicle charge line.“ (quote from Rubicon)

You might well be right for my trailer, too. The proof will be in the testing. It also means that the tow vehicle charge wire runs all the way back to the panel, then forward all the way to the batteries. On my little trailer this adds 25 feet of voltage drop before the tow vehicle charge reaches the batteries. No wonder people report that trying to run the fridge on 12v while driving drains the batteries.
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Old 02-17-2022, 04:33 PM   #22
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Battery Isolator Switch?

Quote:
Originally Posted by John in Santa Cruz View Post
the battery isolator switch on the Escapes is to disconnect the trailer battery from the trailer electrics so the trailer battery doesn't discharge itself in storage when there's no solar or AC to keep it charged. it has nothing to do with the tow vehicle power.
I have a 2012 17B, but I have not ever used "the battery isolator switch." Where is it located in the trailer?
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Old 02-17-2022, 04:36 PM   #23
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My 2009 17B doesn't have an isolator switch. To isolate the battery, I just remove a lead from one of the battery terminals.
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Old 02-17-2022, 04:47 PM   #24
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Quote:
Originally Posted by CLM View Post
I have a 2012 17B, but I have not ever used "the battery isolator switch." Where is it located in the trailer?
Some trailers did not have them. If there is no obvious switch on a dinette seat face you don’t have one.
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Old 02-17-2022, 04:52 PM   #25
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mine was a long skinny 'toggle' switch in that same corner of the dinette where I installed my 250A marine switch, right next to the power center
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Old 02-17-2022, 05:09 PM   #26
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Quote:
Originally Posted by rubicon327 View Post
Some trailers did not have them. If there is no obvious switch on a dinette seat face you don’t have one.
Interestly, the manual for our trailer states to not install a battery switch so that the propane detector would not be turned off. But, our trailer (2017 E19) has one installed (?). Odd.
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Old 02-17-2022, 05:23 PM   #27
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Last I looked, the 17B battery was located on the rear bumper.
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