I'm changing from an old standard ballast to an electronic type. Tried match the wiring but something went wrong as the tube doesn't light? When connecting the wires to the sides that the tubes are, do you attach the wires on 1 side or on opposite sides?
Electrical – How to connect the wires when changing from standard to electronic ballasts
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Best Answer
You follow the directions on the new ballast. Exclusively, and in detail. Most (but not all) modern ballasts ignore bi-pin tubes with heaters, so you (following the diagram) connect to both pins (at one end of the tube) with one color wire. But if the diagram shows otherwise, you follow it.
In any case, you follow, exactly, the diagram on the new ballast. What the old ballast did is irrelevant and often different.