welcome aboard, I also have a 76
Ventura. The manual for the trailer is here
Fiberglass RV - Document Center - Ventura, The
fridge may be a different model than stock but manuals are in the document centre to the left and there are manuals for a lot of different models. If you have never used a 3 way
fridge, be aware they take a long time to cool down. Don't expect to fire it up and have instant cold. Give it about an hour and check the cooling element in the freezer and it should be getting cool or cold. Also the difference between pilot
light and full on is next to nothing(don't expect a large flame).
Best way to get get the
propane going is turn on your bottle, then
light the stove and turn off again. Then try and get the fridge going, May take a minute or 2 for the gas to push out the air in the lines. The
furnace takes even longer as it it the a fair ways away from the bottle. double check them after a couple of minutes to make sure there was no air in lines.
Where are you in Alberta? I'm in north Edmonton if you have a problem.