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Old 09-04-2014, 05:25 PM   #1
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Battery Disconnect Switch

I was replacing the battery and battery box. Did I need to install a disconnect switch? I don't think so but I did it anyway.
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Old 09-04-2014, 07:56 PM   #2
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That's a nice looking job.

I guess nobody has to have a battery disconnect switch, but it sure is more convenient than pulling a fuse. And since some equipment in RV's uses battery power all the time, disconnecting the battery when the trailer is not in use is an excellent idea.
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Old 09-04-2014, 08:11 PM   #3
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Nice clean job. Thanks for sharing.
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Old 09-05-2014, 12:23 AM   #4
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Looks like a winner to me

I have yet to install a disconnect switch...., since I keep my TT in a public storage facility I have to remove my batteries, otherwise the switch would make things a whole lot easier.

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Old 09-05-2014, 09:00 AM   #5
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Nice Installation - One caution when installing a battery disconnect switch. The Trailer when being towed has a DOT 12VDC requirement for the trailer if it becomes disconnected from the tow vehicle when going down the road.

You might want to wire this DOT requirement directly to the battery terminals to always be HOT regardless which position the battery disconnect switch may be in. This may help others involved with towing your trailer and not realize the battery disconnect switch also disconnected the required 12VDC feeding the trailer electric brakes circuit when disconnected from the tow vehicle.

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Old 09-05-2014, 09:34 AM   #6
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Roy, I get what you are saying. The switch I installed is only going to be used when the trailer is in storage. I just think it will be easier to flip the switch instead of opening the box to disconnect the negative or fumbling with the inline fuse (I have cable wrap on the line).
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Old 09-11-2014, 09:21 PM   #7
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Just did mine today. I used a smaller automotive switch and an existing hole in frame underneath the front. I had left the camper parked for a couple weeks and something inside drained out the battery. So now, I will be certain that everything is off!

Like Roy suggested, the emergency brake is wired directly to the battery. It's even in front of the installed in-line fuse. I also left the powered jack in front of the switch...I may want to use that without having to power up everything else.

While I was under there, I cleaned up the messy wiring which I assume was hastily done by the dealer.....I hate rat nests!
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Old 09-11-2014, 09:24 PM   #8
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MrScary,

Nice install, and in a convient location.

Bob
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Old 09-11-2014, 10:43 PM   #9
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In the past I haven't had a need for a switch but now that I am leaving the trailer in Az for the summer I see where my life could be simpler with a switch instead of a wrench to hook them back up twice a year. We used to use the trailer year round but not any more.
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Old 09-12-2014, 05:31 AM   #10
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I installed my switch in the side of the battery box. You mention the draw on the battery. I found one nobody mention's and that's the power antenna. No idea how much and not worried any more with my switch
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Old 09-12-2014, 05:32 AM   #11
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Exactly. Should be OEM in my opinion...
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Old 09-12-2014, 05:48 AM   #12
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Quote:
Originally Posted by MrScary View Post
Exactly. Should be OEM in my opinion...
it is with most other manufacturers other than Jayco

along with bigger converters, Led lights, better fans and so on and so on.
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Old 09-12-2014, 11:35 AM   #13
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Nice job!

I've been going back and forth about wiring the emergency brake directly to the battery. I'm sure its not too difficult. I'm just having a bit of trouble visualizing exactly how I'm going to it. Part of it is that I don't really feel like messing with it again. The disconnect switch install that I did should have only taken a matter of minutes but ended up costing me a full afternoon and two trips to the auto parts store. It wasn't a planned mod. It just sort of evolved out of another smaller and simpler job.
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