Garry Donohue

Ok all fixed! It was the front mount of the passenger side Air Horn. I had pulled out someone’s cable TV wire in 2019 while driving home from purchasing the RV. This was before I knew of this forum and took it upon myself to spray the opening at the air horn with flex seal. It work since 2019 but I now saw pinholes in the sealant. So I used “brushable” Proflex in a can not caulking tube. It self leveled and sealed the small hole perfectly. Hopefully this helps someone in the future, 

Yes ETrailer sells a diode kit called smart diodes as they are made specifically for toads with LED bulbs which I have. They sell a charge line that goes from front bumper of toad to the toad battery. The tow bar Caries  the charge line from the rear of coach to front bumper of toad. Also sold is a charge line from RV battery to rear of RV bumper to attach to toad. So you answered the question. I don’t need the RV charge line. As always thanks. I assume there will be schematics showing the various air lines in my coach. I have to cut into the supply and the metered line with “T’s” to bring air to the rear of coach for braking system. ETrailer shows how it’s done but in a non Monaco coach. I was up under the rear axle today. Looks like spaghetti up there, I don’t want to cut the wrong lines. 

Ok thanks. I think S/S too

The top photo is what all the bad batteries showed, and the bottom was the 4 good batteries. But I have not charged them yet. This is my baseline 

When my rear monitor went out, I accessed the hatch in the front dashboard in front of the drivers seat and found a loose rca Jack going into the junction box for the Aladdin. Did you look at that before replacing anything?