One thing that really helped the condensation situation in my metal pop top camper is insulation on the outside. A wool blanket or an old sleeping bag thrown over the top and held in place with those big paper clips made a huge difference. Much more so than insulation on the inside.
Love my diesel heater too. It's been running continuously for the past several days and nights. Is that a cloth over the air intake? May be a bit restrictive.
That's the same burner unit as my ancient Optimus 00 camp stove. Haven't tried anything but kerosene but I suppose diesel or similar would also work. I carry a small bottle of alcohol to use in the preheating tray.
The most common mistake I've seen with diesel heater installations is combustion air restrictions. Too many bends in the inlet and\or exhaust, tubes too long, no water drain holes in exhaust tube low points. These screw up the fuel\air ratio, like leaving the choke on in an old car. Carbon...
Proper installation is critical for reliable heat. There are heavy truck mechanics who install and repair diesel heaters so you might inquire at truck repair shops. Other than that maybe you can find someone in the RV world with installation experience.
I used one of those HF 2stroke Tailgated generators to run a 40 amp Black &Decker charger for a couple years. Worked great. A 6 amp charger will barely load it at all.
I'll second the $100 Harbor freight 2 stroke generator. (Old Yamaha clone). I've used one for years to power all kinds of power tools. It would even power my air compressor that my 1600 watt 4 stroke would not.
Scotty Kilmer, mechanic on YouTube, did a segment on a 93 Toyota Pickup sold unseen at auction for $46,100.00! Yes it was a barn find with only about 100 miles but still. I'd sell mine for only $35,000.
On the diesel heaters I've found that carbon build up isn't a problem as long as the air/fuel ratio is correct. Run too rich and you get carbon. They tend to come rich from the factory, they put out more heat that way. Most controllers are adjustable, but not all. A CO meter is a must for...
The Buddy heater doesn't really have a low oxygen sensor, it has a special pilot jet that causes the flame to lift and extinguish when there is not enough oxygen. You can watch it work. Haven't seen a Flame King but imagine it uses the same system.
I had a 61 Ford Galaxy convertible. With the top up I could sleep in the trunk, head just behind the back seat, feet by the taillights. They don't make cars like that anymore.
I'm not a fan of electronic keys. Why over complicate something that works just fine. My daughter had to replace one on her 4 Runner and it cost her $400. When I bought a new car 3 years ago one of my criteria was a standard old fashioned brass key which is now a rarity. Right away I had a...