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Old 07-17-2017, 10:33 PM   #43
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Yes you can fit both POS cables to the trailer & inverter on a single lug on the switch. I like to separate because I like to have options you are good either way.
Wow you certainly delivered on the drawings...thanks for confirming and your feedback!

I was thinking earlier and one advantage to the switch you are using is being able to cut the phantom draw (that apparently exists) to the inverter when boondocking...every little bit helps I suppose.
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Old 07-18-2017, 05:47 AM   #44
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And this is why I support Air Forums - thanks for the detailed discussion and drawings.
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Old 07-18-2017, 07:32 AM   #45
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You are both most welcome. Perhaps in the future you'll add something else directly to the battery and the ability to engage / disengage that item will come in handy. I believe the switches are the same or about the same cost. Future proof it!
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Old 08-05-2017, 11:09 AM   #46
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This is for the OP. I am the guy who worked with you at the very front of this thread. I liked what you did very much. As a matter of fact, I liked it so well that I modified it some and adopted it. What I did is:

1. Moved the power wire for the LP detector from a direct battery connection to the 12v distribution board. The disconnect switch now turns it off so it won't be a phantom draw.

2. Put a Blue Sea Disconnect Switch between the battery terminal and the inverter's hot wire so I can disconnect the inverter when I need to. I had decided not to do this because there are 3 conditions my camper stays in, in storage and plugged in charging, camping with power charging, and boondocking where I need the inverter.

However, I am taking my trailer to the dealer for an air conditioner problem and he will have it a couple of weeks, so I decided I needed the disconnect. (I LOVED your Lexan mounting board so I copied it.)

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Old 08-05-2017, 11:29 AM   #47
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Another thought: my Airstream-factory-supplied inverter has a switch on the inverter itself. I wonder whether flipping that switch would stop the phantom draw. Clearly, the button on the wall in the galley doesn't stop it, but maybe that would do the trick. It would mean I have to flip that switch manually if I want to use the inverter, but this wouldn't be difficult.
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Old 08-05-2017, 12:28 PM   #48
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Worth testing. I didn't try because I would have to move the queen mattress and unscrew a panel under it to access the inverter. It was too much trouble to do more than once. My disconnect switch is as easily accessed as my battery (which has a key lock instead of that thumb latch).
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Old 08-11-2017, 05:29 AM   #49
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Thanks to this thread, I got my switches in last weekend. Checked my battery voltage last night and they dropped 0.1 volt or less. Much better than before.

However, now my propane detector doesn't come back on. I had snipped the wires to kill the power before I found the switch option, but I have reconnected with no success. I'm getting power, just no green light.

Any suggestions?
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Old 08-11-2017, 07:09 AM   #50
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Thanks to this thread, I got my switches in last weekend. Checked my battery voltage last night and they dropped 0.1 volt or less. Much better than before.

However, now my propane detector doesn't come back on. I had snipped the wires to kill the power before I found the switch option, but I have reconnected with no success. I'm getting power, just no green light.

Any suggestions?
Are you getting a flashing red light? When it first gets power it flashes a red light for a minute or two while it is initializing. (I discovered this when I moved the LP detector from a direct battery connection to being powered from the 12v distribution board. I finally dug out the owner's manual for the detector and read it.)

Are you getting no light? Maybe you reversed the polarity. Or, maybe when you snipped the wires, you blew the 1 amp inline fuse.
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Old 08-11-2017, 07:31 AM   #51
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I didn't see a fuse, but I bet that can be it. I'll have to trace the wires further back and find it.

I'll dig into it. Thanks!
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Old 08-11-2017, 07:36 AM   #52
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Look where the wires from the battery enter the trailer, probably near your inverter.
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Old 08-12-2017, 02:13 PM   #53
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That's exactly what it was. Replaced the fuse and all is well.

Thank you very much for your advice!!!
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Old 08-13-2017, 12:41 PM   #54
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That's exactly what it was. Replaced the fuse and all is well.

Thank you very much for your advice!!!
>BLUSH< Aw, shucks.
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Old 09-08-2017, 09:11 PM   #55
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Unbelievably helpful thread. Wuulfrat with the wiring diagrams... wow. Planning to hook up the battery disconnect switch tomorrow. Can anyone share a picture or pictures of how they re-wired the propane sensor to go to the 12v panel?
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Old 09-08-2017, 11:39 PM   #56
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I installed two disconnect switches per the photo earlier in this thread.
Batteries have been holding at 12.5V now for two weeks after a full charge.
If you do it this way, you shouldn't have to do anything else. It's working out great for me so far.
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