Jacks, camera and windshield fans? That is intermitant, I assume. So little testing can be done when it is not bad?
Can you point to anything more in how and when it fails or resumes working? Any other items which you can say do or don't work while this is happening?
The more info you can sort out as actually not working or working at any given time when these are failed, can lead to sorting out which circuits are involved and be very helpful on cutting the chase!
Thoughts for right now would be that those would not likely be fed by one specific breaker or fuse on the power side. The HWH is not often on with the cameras and the front windshield fans not on with either of the other two?? Prone to being wrong on that guess but seems unlikley to be the same power feed.
But there is one thing they all have in common and that is ground and corroded grounds can be pretty common, especially on RV if they set for more extended periods than cars or trucks.
One way to go if wanting to try to head off trouble that may not be there now but likely to come back, is to check the ground bus bars. A large complex RV is likely to have a number of different buss bars but there is one location that is almost always true for RV.
If one looks from the front side of the battery rack, often hidden down and behind the batteries and mounted on the frame is a big copper buss bar. Most of the negative battery cables will lead down to this buss for location finding!
It may also have lots of small wires for the smaller cicuits like fans, jacks, and cameras!
Since it is under the floor and gets lots of water, dirt and general tough conditions, it is a good place to find corrosion!
Imagine a wire that is a little bit loose and sets for a while as we store or camp at one site. It is easy to get a bit too much corrosion and stop making a good connection but if we drive for a while, the moving/jarring may shake or scrape some of the corrosion off to let things work again!
I can't say at the moment that is the correct buss bar and it may be at a different location but if you know of other places, one way to ID the correct one would be to find one small wire labeled XW!
That is the ground wire for the two fans.
Winnebago labels small wires like this:
This label is also used on the drawings and we can use this list to "decode" the labels for the "from" and "to" as well as some idea of what purpose they serve:
https://www.winnebago.com/Files/File...ical_guide.pdf
The drawing for your front fans. Click for a better view!
If we tie all that together we find wire XW goes from ignition switch to ground. If the wire is loose/corroded at the bus bar, it can be intermitant.
But it also has to go through the ignition switch and it seems logical all the problems mentioned might work through that igniton switch?
Or it can also be a growing defect in the ignition switch. Sometimes we get too much "stuff" hanging on the key and swinging back and forth wears the contacts in the switch??
Point to keep in mind if things go bad? If you turn the key off/on a few times, would the contacts possible make in the switch and you could say that is supect?
If that same contact works all the different failures, that could be the problem. But checking the grounds is a much easier/cheaper job than changing the ignition switch, so I go for easy first!
It WOULD be nice if things failed and stayed that way until we got time to sort the question but life is not meant to be simple!
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