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How to Replace Alternate 2 Lamp Rapid Start Ballast with Instant Start

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Alternate 2 Lamp Rapid Start Ballast Diagram

Factory wiring

Replace 2 Lamp Series with Parallel Ballast Wiring Diagram 2

This diagram shows a variation of a 2 lamp rapid start ballast wiring one of our readers encountered.

After 2 Lamp Series Ballast is Replaced

Alternate 2 Lamp Rapid Start Ballast Replaced with Instant Start Diagram

This ballast could be replaced with a 2 lamp T8 instant start electronic ballast.

  1. Connect each of the individual blue wires from the instant start ballast to each pair of the lampholder individual wires (red and blue).
  2. Connect the common red wire to the yellow, blue, and red wires of the common lampholders. A blue wire connector can be used to connect these four 18 AWG wires together. However, a larger orange wire connector would be a better choice if available.