2021 Yukon Solar Charge Controller Location

[cj8ersam63]

Hello all
Can anyone tell me or show me with pics, the location of their solar charge controller? I cannot locate mine in my 399ML. I have a solar panel on the roof and invertor in the front bay, but no controller.
I would periodically get audible invertor alarms showing 17v on the battery so I disconnected the batteries till this equipment is found.
Thanks for the replies!

[ewarnerusa]

Originally Posted by cj8ersam63

Hello all
Can anyone tell me or show me with pics, the location of their solar charge controller? I cannot locate mine in my 399ML. I have a solar panel on the roof and invertor in the front bay, but no controller.
I would periodically get audible invertor alarms showing 17v on the battery so I disconnected the batteries till this equipment is found.
Thanks for the replies!

Sounds to me like there is no charge controller if you're seeing 17V on the battery.

[cj8ersam63]

Thats why Im asking for a installed location on another rig.

[ewarnerusa]

Do you have an OEM factory solar option install or is it an aftermarket install? I googled your model of trailer and see that there is an OEM 190 watt panel option. To me, that large of a panel justifies using a charge controller to prevent over charging. But the installers may have decided differently? Has the inverter given the alarm ever since you have owned the trailer? Did it have a different owner before you?

Can you tell where the wire path from the panel enters the trailer? My hunch is the panel is either wired directly into the main 12V battery wire at the back of your 12V control panel (no controller), or it is wired to a controller somewhere in the same vicinity behind your 12V control panel that is then wired to the main 12V battery wire.

[cj8ersam63]

Yes it is OEM install. I am also the second owner, but the first owner never used the RV.
The inverter alarm happened two-three times over the period of a year, said overcharging and showed 17v on the display. I disconnected the batteries on the last alarm as I could not find a way to stop the overcharging.
I have only searched for the controller in the front bay and storage areas. I do not see a cable that could be the solar panel or the charge controller at these locations or at the battery. I never thought to look behind the control panel, I will remove and see.
Thanks for the help!

[ewarnerusa]

You're welcome! I think a DIYer takes the time to put the CC as close to the battery as possible. But the quickest access is often at the 12V control panel.