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Old 08-09-2020, 10:57 AM   #1
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Help to verify 12V and ground in 6-pin connector on Toad

Hey, all -

Iím adding an RVi Towed Battery Charger Plus to my Jeep, and was hoping someone could help confirm that my plug wiring is correct (or not!), as RViís customer service wonít be in before we have to take off tomorrow on the first leg of our trip.

Iíve got a 7-to-6 pin Blue Ox cable. I plugged it into the RV, and with the multimeter on the 6-pin (toad) end of the cable I got 12V+ with the red lead in the 2 oíclock socket and the black lead in the 10 oíclock socket - I didnít get any voltage in any other combination of sockets. (NOTE: for some reason the photo showing the MM leads is rotated 90D counterclockwise, so the left edge of the photo is actually ďup.Ē)

The Battery Charger Plus needs both 12V and ground, so I assume that 12V is the pin on the Jeepís socket that corresponds to the red lead in the cable (2 oíclock), and the ground corresponds to the black lead (10 oíclock). This seems to match up with whatís shown in the RVi troubleshooting video (screen caps attached), although thereís no voice over, and how itís shown there is how Iíve wired mine.

So, Iíd appreciate it if someone could let me now if Iím on the right track. Iím a total noob at 12V systems and donít want to blow anything up, when I plug it in, lol! 🤓
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Old 08-09-2020, 11:12 AM   #2
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The only way to make absolutely sure is to test it with a meter which it look like you have. It does look like you're on the right track. The only other thing I would do is to check the other pins to see what they do. I got some wiring diagrams from etrailer but you never know how someone else wired something. The diagram I got from etrailer shows +12 in the middle and GND at the 2 o'clock position, but this would be 10 o'clock on the RV end if I'm turning it around in my mind correctly. The only other thing I can think of is to disconnect the wire you think is the hot lead in the six pin and then make sure everything else works OK. If it does hook the loose wire back up and you should be good to go. If not repeat the process until everything work and the wire that is off is your hot lead.
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Old 08-09-2020, 11:29 AM   #3
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You are on the correct path.


The towed end of the Blue Ox cord (six holes) tests + at the 2 o'clock position. You just need to be certain that the socket pin on the Jeep at the 10 o'clock position is for 12+. Same with the ground, only the positions of the holes and Jeep pins are reversed.
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Old 08-09-2020, 12:14 PM   #4
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Okay, Iíll keep that in mind. I canít test it until tomorrow morning when we pull out, as I canít get the Jeep close enough to the rear of the rig for the cable to reach.

Also, I thought I had mentioned this (sorry - not enough coffee!), but the socket on the Jeep and wiring harness for the lights were installed at an RV dealer and had an earlier version of the charger that only needed the 12V, and that was pinned to the same place as the ď12VĒ in one of the attached pics. Also, FYI, there isnít a wire on the Jeep end in the center pin.

Quote:
Originally Posted by arcaguy View Post
The only way to make absolutely sure is to test it with a meter which it look like you have. It does look like you're on the right track. The only other thing I would do is to check the other pins to see what they do. I got some wiring diagrams from etrailer but you never know how someone else wired something. The diagram I got from etrailer shows +12 in the middle and GND at the 2 o'clock position, but this would be 10 o'clock on the RV end if I'm turning it around in my mind correctly. The only other thing I can think of is to disconnect the wire you think is the hot lead in the six pin and then make sure everything else works OK. If it does hook the loose wire back up and you should be good to go. If not repeat the process until everything work and the wire that is off is your hot lead.
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Old 08-09-2020, 12:20 PM   #5
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Understood. Also, at the 2 oíclock position looking at the Jeep socket (which Iím hoping is the ground), thereís a brown wire already there, but Iím not sure what that goes to - as I mentioned above, I canít hook up the Jeep to the RV until we pull out of the site tomorrow AM.

Also, aside from the originally installed wire that I think was for 12V to the old charger, the 10 oíclock/?12V? (looking at Jeep socket) pin didnít have any other wires going to it.

Quote:
Originally Posted by Ljwt330 View Post
You are on the correct path.


The towed end of the Blue Ox cord (six holes) tests + at the 2 o'clock position. You just need to be certain that the socket pin on the Jeep at the 10 o'clock position is for 12+. Same with the ground, only the positions of the holes and Jeep pins are reversed.
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Old 08-09-2020, 03:11 PM   #6
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The connectors and plugs are marked as to the proper wire placement
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Old 08-09-2020, 03:30 PM   #7
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Smoky - Unfortunately, the diagram you posted doesnít match whatís on the Jeep. HOWEVER, I just found the Blue Ox wiring diagram on eTrailer:



So, I think I have it right, but the wiring the RV dealership guys used on the Jeep when they added the plug doesnít match the Blue Ox diagram color-wise. They have a brown wire instead of white for the ground, a red one instead of brown for the tail light, then the green and yellow wires reversed for left and right tail lights. Oy!

Despite that, I think Iíve got the 12V and ground wires in the right sockets on the Jeep. Weíll find out tomorrow when I plug it in!

Thanks for your help, folks!! 😊

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The connectors and plugs are marked as to the proper wire placement
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Old 08-09-2020, 03:47 PM   #8
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The connections are pretty much standardized with one exception being the electric brake wire when going from 7 to 6 pin or vice versa

If you look the right, left, turn and tm are always in the same location and any good tech uses the proper color wires per standard protocol

Unfortunately some do not

Good luck
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Old 08-09-2020, 06:30 PM   #9
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I like to print out and keep this copy of trailer wiring from Etrailer. If you scroll down through the below link, you'll see all the wiring configurations in color. I print those and keep them in my tool box.

I ALWAYS WIRE TO THE STANDARD, SO THERE IS NEVER AN ISSUE.

https://www.etrailer.com/faq-wiring.aspx
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Old 08-09-2020, 09:39 PM   #10
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I have the RVI battery charger and the Blue Ox cable. 2 oíclock is the right pin.

Once you start your RV and have everything connected, you should see a flashing light on the RVI charger showing itís working.
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