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I'm wanting to do a ballast bypass in this ancient fluorescent fixture with a magnetic ballast in my laundry closet. It has a single bulb and is easy to access, so I thought it would be a good one to try out the bypass on to see how it goes. When i opened the fixture up, I noticed something I hadn't seen before in the how-to videos. One tombstone has three wires coming out of it. There is a blue from one side of the tombstone directly connected to the ballast, then on the other side of the tombstone are two white wires: one directly connected to the ballast and one wired to the neutral from the house. Is it ok to just combine all three (the two whites and the blue) to the house neutral or do I need to pull one out or what? The picture shows the three wires coming from the one tombstone. The tombstone on the other side has two red wires directly connected to the ballast and looks as expected.

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Nick
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2 Answers2

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It doesn't matter if the wires are paisley :)

All wires which go to one tombstone are connected to utility "hot".

All wires which go to the other tombstone are connected to utility "neutral".

That's that. You are now ready for a double-ended ballast-bypass LED, or a universal LED.

If you somehow get a single-ended ballast-bypass LED, or a Plug-n-Play LED, or a Type C, then send it back.

Harper - Reinstate Monica
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Probably. It depends on what the ballast bypass lamp expects. The ones I've used need line on one end, neutral on the other. In that case you can treat all three of these wires as the same wire and put them in a wire nut with line or neutral, then do the same with the two wires at the other end.

Make sure to install the sticker which shows the ballast has been bypassed.

KMJ
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