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Old 05-10-2014, 12:38 AM   #1
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Battery connection correct? with pictures.

Dewinterized about a week ago and put the battery back in. Put it on shore power overnight. Went out today and power jack didn't work. Multimeter showed 11.6V. Started thinking I may have reversed the cables. It is a 2014 Jay flight swift 264BH. I have been looking at the battery and cables for a couple hours now and I don't think I got it wrong. Can someone just look at these pics and reassure me as we are talking off in the AM for a few days of dry camping. Click image for larger version

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That white cable on the negative terminal goes behind the battery to the frame but then proceeds to that box in the other pic. Click image for larger version

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The main black cable on the positive terminal goes to the red covered thing on the right side of the red thing in this pic. The battery on shore power shows 13.6V. Any thoughts on if it's hooked up properly ? I appreciate it. Thank you.
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Old 05-10-2014, 01:32 AM   #2
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I would suggest opening that box which is just a junction box and make sure that the terminations are not loose or corroded.
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Old 05-10-2014, 01:37 AM   #3
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Also check that red thing as it may be a mini breaker or fuse but just looks like a splice point. It may also be loose or corroded.
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Old 05-10-2014, 01:51 AM   #4
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I believe white cable is positive and black is negative
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Old 05-10-2014, 01:55 AM   #5
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Quote:
Originally Posted by scrawf7 View Post
I believe white cable is positive and black is negative
But would the positive cable go directly to a screw on the frame? That's what has me confused.
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Old 05-10-2014, 01:56 AM   #6
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I will check for loose and our corroded connections. Thanks for that advice.
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Old 05-10-2014, 02:48 AM   #7
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You are absolutely correct about the white wire being positve in most cases but if it is it shouldn't go to the frame.
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Old 05-10-2014, 06:42 AM   #8
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Use your ohmmeter to find which wire is grounded. Disconnect both from the battery first. Set your meter to some low value like 200 ohms. Connect one lead from the meter to one of the wires and the other to a good ground on the trailer frame. Which ever wire reads closest to ZERO ohms (not infinity) is the grounded wire of the 12v system.

On my '06 23B the negative wire is WHITE and on the positive terminal I have a green wire with a 30A in-line fuse that feeds a bundle of BLACK wires all hooked together with a giant wire nut. Your first photo shows a BLACK wire on the positive with a green wire and an orange wire crimped on the same ring terminal. I believe you're hooked up correctly.

Just keep in mind that the color of the insulation is not the primary concern nor is it a surefire way to determine where it is supposed to be connected.

One last thing. Keep the top of the battery clean at all times. Dirt is a conductor and will discharge the battery over time even if the battery is completely disconnected from the system. Want proof? Find a dirty battery. Set your multimeter to read DC voltage in the 25 volt range. Touch one lead to either battery terminal and the other lead to the dirty top of the battery and you'll read voltage guaranteed. It may only be a few volts but it's enough to drain the battery.
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Old 05-10-2014, 07:29 AM   #9
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In the RV BATTERY world the BLACK WIRE is HOT (+12VDC) and the WHITE CABLE is frame ground (-12VDC).

In the Automotive BATTERY world the RED CABLE is HOT(+12VDC) and the BLACK CABLE is frame ground (-12VDC).

Sometimes the two worlds get mixed together.

I always look at the battery case for the word 'NEG' or the symbol '-' and make sure this is the cable that is going to the frame ground.

Also I have found alot of RV wiring that is all WHITE cables that have different color stripes running with it. In this case a SOLID WHITE will be frame ground and all the white cables with different color strips will be HOT (+12VDC).

I guess the RV WORLD tries to follow standard house wiring colors for the 120VAC wiring but when you add the BATTERY WORLD to the situation other BATTERY wiring schemes gets mixed together. When you go buy a replacement JENSEN AM/FM radio it will come with RED and BLACK DC cable wiring. This usually results in the RED wire on top of BLACK wire in the RV wiring somewhere haha... Makes the 'old electricians' turn over in their grave I reckon...

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Old 05-10-2014, 07:40 AM   #10
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Quote:
Originally Posted by roybraddy View Post
in the rv battery world the black wire is hot (+12vdc) and the white cable is frame ground (-12vdc).

In the automotive battery world the red cable is hot(+12vdc) and the black cable is frame ground (-12vdc).

Sometimes the two worlds get mixed together.

I always look at the battery case for the word 'neg' or the symbol '-' and make sure this is the cable that is going to the frame ground.

Also i have found alot of rv wiring that is all white cables that have different color stripes running with it. In this case a solid white will be frame ground and all the white cables with different color strips will be hot (+12vdc).

I guess the rv world tries to follow standard house wiring colors for the 120vac wiring but when you add the battery world to the situation other battery wiring schemes gets mixed together. When you go buy a replacement jensen am/fm radio it will come with red and black dc cable wiring. This usually results in the red wire on top of black wire in the rv wiring somewhere haha... Makes the 'old electricians' turn over in their grave i reckon...

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