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How to Replace 4 Lamp Instant Start Ballasts

Replacing a ballast of the same type (4 lamp with 4 lamp, instant start with same) is fairly simple. The wiring and wire colors match up. Find 4 Lamp Instant Start Ballasts

4 Lamp Instant Start Ballast Diagram

Factory wiring

4 Lamp Instant Start Ballast Replacement Diagram

Replace

Ballasts

Replace 1 Lamp Rapid Start with 2 Lamp Instant Start

Replace 1 Lamp Rapid Start with 2 Lamp Rapid Start

Replace 2 Lamp Instant Start

Replace 2 Lamp Rapid Start with Instant Start

Replace Alternate 2 Lamp Rapid Start with Instant Start

Replace 2 Lamp Rapid Start

Replace 3 Lamp Instant Start

Replace 3 Lamp Two Instant Start with One Instant Start

Replace 3 Lamp Rapid Start with Instant Start

Replace 3 Lamp Two Rapid Start with One Instant Start

Replace 3 Lamp Programmed Start with Instant Start

Replace 3 Lamp Programmed Start with Rapid Start

Replace 4 Lamp Instant Start

Replace 4 Lamp Two Rapid Start with One Instant Start

Replace 4 Lamp Rapid Start with Instant Start