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Old 10-25-2012, 08:02 PM   #15
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I'm wondering whether the OP is thoroughly confused by all this conflicting advice about cable colours. I am.
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Old 10-25-2012, 10:00 PM   #16
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Quote:
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I'm wondering whether the OP is thoroughly confused by all this conflicting advice about cable colours. I am.
EVERY wire under the dash on my rig is white. Looking closely, I discovered they are all imprinted with their function. Color isn't a reliable way to figure polarity.
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Old 10-27-2012, 01:23 AM   #17
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Hooking up RV Battery - which wires are positive/negative? - Yahoo! Answers

RV.Net Open Roads Forum: Do It Yourself Modifications and Upgrades (DIY): Battery wiring

Wandering Free.com Basic 12 volt Electricial color codes for wiring Rv accessories

Weather permitting, I will take a look at my RV tomorrow.

Here is what I posted in my note above: "In a house, black is AC hot, red is AC hot in a two phase 220 v AC circuit. White is neutral. Green is ground. But this has absolutely nothing to do with DC battery connections in a car or trailer."
It does apply to the 115 VAC supply in a RV. It has to be darn confusing to have black as AC hot, but black as DC negative when both AC and DC are present in a RV. In one of the links above, they refer to inside the RV color code vs outside to the battery color code.

In house electrical wiring, neutral (white) and ground (I stated green, which is true when it is insulated - but bare wire is what is in romex) are physically and electrically tied together at the main breaker box.

Regardless of what the color, by code, should be, the only way to be certain is to either physically trace the wires, or use a DVM and check either resistance or voltage with the battery disconnected as outlined in the posts above.

Since he switched the connections, he had to have had it backwards once. I hope he will have the system checked by a qualified professional.

I have worked for decades on electronics design and repair where white is positive and black is ground. I have to keep reminding myself that back is AC hot when doing simple maintenance around the house. It drives me nuts.
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Old 10-27-2012, 05:13 PM   #18
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"I'm wondering whether the OP is thoroughly confused by all this conflicting advice about cable colours. I am"

He was asking about the connections to the battery - not other wiring. They should be red and black. The fact that they were not raises red flags. He should check polarity using a DVM. Then fix it to be consistent with color codes.

I was not too thrilled that his RV used a non-waterproof junction box. That tells me that someone re-did a lot of wiring and may not have followed conventions. It might not be safe.

"EVERY wire under the dash on my rig is white. Color isn't a reliable way to figure polarity"

Color should be, if the RV is wired correctly. But the more that owners change things, the less reliable it is. I don't know that all factories follow color codes. "White - This color wire is usually used for connections of switches."
Wandering Free.com Basic 12 volt Electricial color codes for wiring Rv accessories

I ran into one guy today who was wiring his "new to him" trailer. He found that his left turn signal turned on the outside visibility lights, not the turn lights.

I played around with a 2012 Chalet Takena this morning. Red to the battery is positive, black negative. I took apart some of the 12V connections inside the trailer. White was positive and was used on switched and fused circuits.
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Old 10-27-2012, 05:26 PM   #19
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You're just assuming these have been owner changes. Not OEM
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Old 10-27-2012, 11:48 PM   #20
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You're just assuming these have been owner changes. Not OEM
There is some evidence that there may have been changes. The type of junction box used is certainly suspect.
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Old 10-28-2012, 04:08 PM   #21
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I give up. No convincing you that I've seem all this oem.
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Old 10-28-2012, 06:23 PM   #22
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I give up. No convincing you that I've seem all this oem.
Sorry, I did not mean to aggravate you.

If an OEM is using black for positive on a battery connection, they are following a dangerous practice.

If they are using white for the positive connection, then that is less of a problem since the black is negative. Marine wiring is done that way.

If you have names of trailer companies that are currently making trailers where they have a black wire going to the positive connection on a battery and white going to the negative, please let me know the names. I would like to stop by a dealer and see them.
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Old 10-28-2012, 08:11 PM   #23
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Well since I am scared of electricity and this trailer is straight for factory to dealer to me, then no one but the factory and the dealer has done any wiring. And sorry to say for my luck, but the company making these trailers has already gone under after making trailers for 3 yrs.... Yes, I know. Sucks to be me....
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Old 10-29-2012, 08:18 PM   #24
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Good luck Shaker. I think taking the trailer to the dealer is a wise move.

Please let us know what happens.
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