I just bought a 1978 18 foot fleetwood prowler, and I am having issues. The air conditioner will turn on but it wont blow air, and it pops breakers. The fridge doesnt work if anybody could tell me where to get a new one that would be great, and how do i drain the fresh water tank when there is not a drain?
The fridge will need to be replaced. Go to an RV supplier for a gas electric model. They start at around $1000 for a mid sized unit. You could also go with a dorm fridge but it will only work on shore power. (no boondocking)
The air conditioner should also be replaced. A unit that old probably doesn't have parts available. I'm guessing the motor is frozen, that's why it's popping breakers. $600+.
The water tank should have a drain or there could be low point drains. Look for two lines coming down from the belly. Some older trailers used the water pump to drain the tank. The drains should have caps or inline valves. I've also seen the lines with inside valves which can be very hard to get to.