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Old 02-22-2018, 03:13 PM   #1
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Fuse between battery and converter?

What type of either breaker or fuse does Jayco use on it's trailers between the battery/batteries and the converter?

I see boxes and junctions on the front edge of the trailer chassis. Is this where the fuses/breakers are?
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Old 02-22-2018, 04:10 PM   #2
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The fuse is "normally" spliced into the positive battery cable prior to the A-frame junction box. If it isn't obvious it may be hidden within the black plastic split-loom wire/cable protector that the positive cable runs through. The fuse may be a "blade" or "glass" in-line type.

Bob
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Old 02-22-2018, 04:28 PM   #3
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On my Jayco trailer, there are two GREEN wires hanging outside the front junction box (on the cross frame behind the battery) with a little fuse socket on the wires. It was kinda hard to see until I moved some wires around.
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Old 02-22-2018, 07:26 PM   #4
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Thanks all. I'll go look tomorrow, weather permitting.
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Old 02-22-2018, 08:49 PM   #5
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On many trailers they use a number of auto-resettable "can" type fuses which are typically located near the batteries. They're shaped like a matchbox, but slightly larger, have a rubber cover and screw-type terminals. They're used for higher current DC circuits (usually those >25 amps)---particularly those circuits that exceed the DC current capability of OEM power centers (i.e., electric stabilizer jacks).
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Old 02-22-2018, 09:02 PM   #6
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30 amp ATO fuse
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Old 02-22-2018, 09:40 PM   #7
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Our 2017 Jayco QBW just got recall about that very thing. There is a fuse between the battery and converter. In the recall if you remove the fuse everything still works. At least there is a recall
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Old 02-22-2018, 09:57 PM   #8
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Kayco53,

I believe the recall is addressing the "lack" of any overcurrent protection (fuse, circuit breaker, etc.), not an issue with an existing fused connection. The Jayco recall applies to specific 2016-2018 Jay Flight SLX models only.

Please advise if my interpretation is incorrect.

Bob
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Old 02-23-2018, 01:55 PM   #9
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Replaced fuse with circuit breaker. Note color of wires

Here is a photo of a breaker I installed so I didn't have to deal with the fuse issue. Note the color of the wires. The Jayco fuse was installed with these green wires and was located on the trailer frame under the front cap.
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30 Amp Breaker Resized.jpg  
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Old 02-23-2018, 02:01 PM   #10
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The issue was that Jayco installed a fuse but installed it in the wrong location on many units. They installed the fuse between the vehicle charge line and the battery positive, instead of between the battery positive and the inverter.

That was the reason all the lights remained ON after the fuse was remove on some units.

A marine style, 30 amp breaker with rubber cover was used to install between the battery and inverter which now protects the wiring from the battery in case of a dead short.

https://www.amazon.com/Sea-Dog-42085...rch&th=1&psc=1
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