turn the red knob to the "pilot" position and press in the red knob. Right above it is the igniter button (square grey one). press it in while holding in the red knob. That should light
the pilot light
. Keep the red knob depressed for about 1 minute then turn to the "on " position. It should now be running. Not sure if you have a thermostat but it should be set to heat and at a temp warmer than the temp in the trailer.