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Old 04-12-2016, 10:16 AM   #1
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What is this little red box the Negative battery cable connects to on the frame

I have a corroded "junction box"?? that the negative battery cable connects to on the frame of my RV. The negative battery cable connects to the battery then runs to this point on my frame. Its a little red plastic cover that covers the connection of the negative battery cable on one post, and another post that connects 4 smaller wires. Can anybody tell me what this is. I need a new one. Mine is totally corroded.

Thank you in advance.

Gunclubchamp
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Old 04-12-2016, 10:21 AM   #2
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I have a corroded "junction box"?? that the negative battery cable connects to on the frame of my RV. The negative battery cable connects to the battery then runs to this point on my frame. Its a little red plastic cover that covers the connection of the negative battery cable on one post, and another post that connects 4 smaller wires. Can anybody tell me what this is. I need a new one. Mine is totally corroded.

Thank you in advance.

Gunclubchamp
Does it look anything like this resettable fuse (aka short-stop circuit breaker)?

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Old 04-12-2016, 10:26 AM   #3
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Not likely on the negative side of the battery.
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Old 04-12-2016, 10:30 AM   #4
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It sounds like a terminal strip, but a picture would help a lot.
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Old 04-12-2016, 10:31 AM   #5
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Not likely on the negative side of the battery.
Unless the member is only looking at wiring color, which if black and white, causes confusion as to what is positive(black) and negative(white) on a RV.
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Old 04-12-2016, 10:36 AM   #6
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That's it!

That's it exactly! The red one! What is that called. I need a new one. Thank you so much!
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Old 04-12-2016, 10:39 AM   #7
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You answered my question earlier, thanks
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Old 04-12-2016, 10:45 AM   #8
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You answered my question earlier, thanks
You are welcome, but as Bubbles pointed out, are you sure it's on the negative cable (which it could be)?

The reason I ask, is RV battery wiring color can fool you. If you have a black and white wire going to the battery, the BLACK is usually the POSITIVE wire, and the white is the negative wire. It's more like the way a house is wired accorded to color schemes.

It kind of runs counter intuitive to what you are used to on a vehicle...but you need to know this in case you ever change your battery or such. If you connect the battery wires backwards, you will blow the reverse polarity fuses to your converter.

Now to just add more to the confusion, if your RV battery wires are only black and red, then the opposite holds true and it's like on your vehicle. The red is positive and the black is negative.
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Old 04-12-2016, 10:51 AM   #9
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That's it exactly! The red one! What is that called. I need a new one. Thank you so much!
The red is just a removable cover TO the 12 volt resettable fuse. You can pick these up at about any auto parts store. They are sized according to amps.
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Old 04-12-2016, 10:53 AM   #10
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Worse yet, they are current limiters (fuses) and have a rating specific to your camper and the circuit it is protecting.

You will most likely need to disconnect your battery, LABEL THE WIRES, remove the current limiter and read the numbers on the side if you can.

It can be a challenge.
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