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How to Replace 2 Lamp Instant Start Ballasts

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Replacing a ballast of the same type (2 lamp with 2 lamp, instant start with same) is fairly simple. The wiring connections and colors match up.

2 Lamp Instant Start Ballast Replacement Diagram

After 2 Lamp Ballast is Replaced2 Lamp Parallel Ballast Wiring Diagram using Shunted Lampholders

2 Lamp Instant Start Ballast Diagram

Factory wiring