Airstream Excella 500 1979 Owner's Manual page 45

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No. Description
19. L.P.G. Bottle Cover.
20. Refrigerator vent.
21. Safety chain.
22. Seven way connector - 12 volt. ..
23. Disc brake vacuum booster cover
24. Univolt vent.
25. Battery compartment .
26. B.A.L. stabilizing jacks.
27. Stop and turn signal monitor .
28. Refrigerator access door .
29. Water inlet (tank) .
30. Sewage outlet and dump valves (C.B.)
31. Side access door.
32. Electrical inlet (city).
33. Water inlet (city).
34. Sewage outlet (Rear Bath)