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LED ballast bypass question
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ccjersey
Posted 11/5/2026 13:33 (#11795442 - in reply to #11795428)
Subject: RE: LED ballast bypass question


Faunsdale, AL
https://youtu.be/QMcT9jdhK9w?is=JBtIPTzkLhkfzteP

This should go to a video discussing all the ins and outs of doing this right. The big difference seems to be if the pins on each tombstone connector are shunted together or supplied by separate wires. Shunted seems to be wrong for SOME LED replacements but ok for others.

Might need to take something apart to see how many wires go to each tombstone connector and if it’s two, how those are supplied.

I was thinking I had put all the wires running to one end of fixture to line and all those on other end to neutral. Apparently my bulbs were ok
With this “shunted” installation where both pins on each end of the tube are connected to the same source conductor.

The other possibility is each pin on one end of the tube is connected to different source wires so you have 120 volts between the two pins. That would be more complicated for your 6 bulb fixture. Probably have to open up the covers and look how the tombstones are supplied.




Edited by ccjersey 11/5/2026 14:08
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