Running 2 space heaters

[tentcamper]

But getting back to elec heaters. I'm going to look at the 120/20 amp source for the AC to tap into and add an outlet in the camper for the elect heater. I figure I will never run the AC and an electric heater at the same time. I will home run a line and put a 20 amp GFI plug on the end.

I believe the AC 120 is in the junction box that is below the camper just below the fridge.