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Old 05-21-2022, 07:21 AM   #1
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Trailer connector issues

Has anyone had issues with the 7 pin trailer connector not wired correctly? On our 2019 29 MV, it seems as though the connector is wired incorrectly. I noticed that the running lights on my car trailer were not working. I was troubleshooting this, and with the lights on, I am not getting power to the pin that should be the running lights.
With the RV's running lights on, no pin on the plug has power.
With a 7 pin to 4 pin adapter or the 4 pin connector, no power for running lights.
On one hand, it is not a big deal, as we never run at night. But if we had to, I would like to have those lights working, or in bad weather/rain, it would also be nice to have those lights working.

Thanks
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Old 05-21-2022, 07:28 AM   #2
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Never have

But could be a simple connection isn't tight
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Old 05-21-2022, 07:52 AM   #3
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Have you checked the fuse box? The 7 pin has its one fuses for each function.
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Old 05-21-2022, 07:52 AM   #4
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I pulled the connector off the RV and got to the back of it to troubleshoot. The front part of the connector comes off from the main harness. Still no power when testing this way.
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Old 05-21-2022, 07:53 AM   #5
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Quote:
Originally Posted by Jagiven View Post
Have you checked the fuse box? The 7 pin has its one fuses for each function.
Where is this fuse box? Not seen one in the RV for this wiring, or is it in the fuse box under the hood?

Thanks
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Old 05-21-2022, 07:57 AM   #6
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Originally Posted by Todd Ockert View Post
Where is this fuse box? Not seen one in the RV for this wiring, or is it in the fuse box under the hood?

Thanks
Yep, its under the hood, with all the other chassis fuses.
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Old 05-21-2022, 07:58 AM   #7
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Thanks. I will run over to my storage place and check on this.

Appreciate the quick work on this.
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Old 05-21-2022, 08:04 AM   #8
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You may want to check fuse #22 (15A) under the dash and also a 5A fuse on the frame rail near the back. See the video around the 1:50 to 2:00 mark for that 5A fuse location. The beginning of the video, he's talking about things that don't pertain to your issue.

https://youtu.be/yvqwm52nyPk
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Old 05-21-2022, 08:17 AM   #9
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The running lights on the RV itself are working though.
I will check that fuse also though.

Thanks
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Old 05-25-2022, 04:54 PM   #10
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For me it was fuse 55 or 58 under the hood. It was blown.
Replaced and good to go.
I think it probably went out last year coming back while the trailer was connected and driving in some serious rain squalls. We had to pull into a parking lot to get off the road, as you could not see 10 feet in front of you.
Thanks for the help.
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