"New" Vintage TT

Not sure about the Holiday but older trailers did not have holding tanks. Most had porta pots or recirculating toilets and a drain like pop ups. That's how I will set mine up, with a porta pot and a 7 gallon portable water jug for waste water from the two sinks. Older water tanks were pressure systems that you had to pump up with a bicycle pump. Ebay has some nice tank/pump/fill kits pretty reasonable. But that also leads to a battery and converter which these old trailers didn't have. They were made to get 12volts by plugging into the tow vehicle. For lighting they used gas lights (which mine are gone). I am putting all 12V lights in with a battery and 30A converter. One thing leads to another on these. But it is fun.