Mystery Fuse does What?... to Me. 2019 Oliver Elite II

[BoondockingAirstream]

This fuse is under the street side bed and half way up the right side among other wiring hardware.  What does this Fuse Protect?  What is it called?

I am trying to hunt down an obscure reason why my Trailer Brakes are not recognized, when my 2019 Oliver Elite II to my 2016 F350 Diesel.  I plug in and when press the F350 Brakes... disconnected.  My 2019 Airstream has no issue with the Brake Controller. So it is the Oliver and some wiring issue?

Pull the Trailer Disconnect when spinning wheels on either side... they immediately lock up firmly.  Insert the Pin and power is disconnected and free wheeling with no effort.

Have a Post on Oliver #448 and trying to find the... obscure... problem, but following wiring using a flashlight is the best I can do at the moment.

Edited 2 hours ago by BoondockingAirstream

[Steve Morris]

This is the fuse for the CO2 detector. I needed to find it in the middle of the night at Camp Oliver the day we took delivery of Curiosity! 😵‍💫

[BoondockingAirstream]

Steve Thanks.  Now everyone knows.  This is information that is often found by those with experience!

Learning one 'fuse' at a time.  I will plug it back.

My Electric Brakes seem to have a Fuse issue or Wire inside the Oliver.   Maybe  a simple fuse, reset or something that is between the operating brakes and 7 pin plug.  Or a wire not making contact in a wire bundle under the table or bed access areas.

Wow.  Again that was quick.

[BoondockingAirstream]

How About THIS ONE, under the second seat at Table.  No fuse inside this RED Plastic.