It is best to follow the same procedures every time you set up your tent trailer, so you become efficient and don’t do things out of sequence or forget a step. I place a piece of PCV pipe to depress the Pilot knob on the water heater control and then switch on the igniter. As I lower the stabilizers, walking around the trailer, I end up back at the water heater, whose pilot light is now on. I then remove the PCV pipe and turn the knob to the “On” position.