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Old 12-12-2019, 11:28 AM   #1
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2018 16' Sport
St. Louis , Missouri
Join Date: May 2019
Posts: 83
Adding mppt controller 16' Bambi

Looking for answers, as always. I have a 2018 16' Bambi with 2 solar panels on the roof and a homemade 200 watt suitcase. Recently changed out the controller for a Renogy mppt. While my head was in the hole, messing with the wiring, I found a wire under the battery cables that I hadn't seen before. It is yellow, with a solar label, and a telephone type plug on the end. I have already identified the yellow and green cables coming from the solar.
Pictures below of the cable and a distribution box that I haven't figured out. I have a 12 volt positive and negative bus bars but is this box 120v?
Thanks
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Old 12-12-2019, 12:04 PM   #2
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2018 25' International
Slidell , Louisiana
Join Date: Sep 2017
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it is a communications cable for a remote display panel that you may or may not have
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Old 12-12-2019, 12:19 PM   #3
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2017 20' Flying Cloud
Oriental , North Carolina
Join Date: Mar 2018
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The yellow wire is for solar controllers that have a remote display. The other end of the wire is in a wall somewhere (probably varies by model. My 20's is in the galley near the pump switch/battery monitor). Your Renology may or may not be able to use it.
The black junction box you have opened up is for your 7-way cable for the hitch (turn signals, brake controller, charging, etc). If you have a need to replace your 7-way cable you could disconnect it here and pull it out of the A-frame. This is easier than splicing the wires or chasing them down through out the rig.
Good luck!
Fred
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Old 12-12-2019, 12:42 PM   #4
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2018 16' Sport
St. Louis , Missouri
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Thanks, I assumed it was for some type of communication cable. The other end is probably behind the gauges and pump switch console. Will help if I get a battery monitor like a victron.
Also thanks in the 7 way wiring box.
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