Energize the circuit with the fuel tank selector switch selected to the left-hand position. Using the schematic, identify the switches that will change position.

• A. 5, 6, 11, 12, 13, 15, 16.
• B. 3, 5, 6, 7, 11, 13.
• C. 5, 9, 10, 11, 12, 13, 15.
• D. 4, 5, 7, 11, 12, 14.

Answer: (A)

When the fuel tank selector is moved to the left, the left-hand pole closes and supplies power to the circuits connected on that side. In the schematic, that energizing path will cause the switches that are fed by that left-hand contact (and any related interlocks that depend on that path) to change state. The correct choice is the one that matches exactly the switches wired to that left-hand energizing line in the diagram. The other options would require energizing paths that aren’t connected to the left-hand contact or would miss switches that are, so they don’t correspond to the left-position energizing network.