I picked my Carbon 33 up two weeks ago. I started replacing the lights with LEDs.........I've been using m4 for LED light replacements.
Here are my opinions of the Carbon 33. It's a great looking trailer. I think the LED light replacement is the way to go.....when you turn on the lights in the main cabin, the fan kicks in to cool the inverter, which gets pretty loud.....but with LED's, it doesn't even turn on.
The Furnace is only a 20k btu....very disappointing since it's a larger trailer and surely should have had at least a 30k btu furnace. I had planned on using this camper for hunting, but I'm sure it won't keep up with 20 degree weather unless I update the furnace.