Will both boost pumps turn on if only one of the boost pump switchlights is pressed?

Will both boost pumps turn on if only one of the boost pump switchlights is pressed?

• A. Yes
• B. No
• C. Only one pump will start
• D. They will not operate

Answer: (A)

Boost pumps are wired so that energizing the boost-pump circuit powers both pumps in that tank. When you press a boost pump switch, power flows to the shared circuit and both pumps start, even if only one switchlight is pressed. The lights simply indicate the circuit is energized, not that a single dedicated pump is being controlled individually. This design guarantees adequate fuel pressure by running both pumps together for priming or high-demand situations.

Boost pumps are wired so that energizing the boost-pump circuit powers both pumps in that tank. When you press a boost pump switch, power flows to the shared circuit and both pumps start, even if only one switchlight is pressed. The lights simply indicate the circuit is energized, not that a single dedicated pump is being controlled individually. This design guarantees adequate fuel pressure by running both pumps together for priming or high-demand situations.