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How to Direct-Wire Single-Ended LED Tube Lights

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Single-ended LED tubes are not recommended because they have many installation restrictions and the wiring can be confusing. For single-ended direct-wired LEDs, line and neutral are connected to the lampholders at one end of the fixture. If shunted lampholders are used in the fixture, they must be replaced with non-shunted at one end of the fixture. Connecting line and neutral to a shunted lampholder will cause a short circuit. Tubes of this type can not be reversed in a fixture. A fixture modification label (should be supplied with the tube) is affixed to the fixture showing which end has power.

LED Single-ended  Wiring Diagrams

For 4 lamp instant start fixture (ballast wired in parallel)

4 Lamp Led Single-Ended Ballast Lampholder Wiring Diagram

Using existing light fixture wiring

Lampholders on left side were replaced with non-shunted lampholders. Lampholders on the right have the original shunted lampholders.

Replace 4 Lamp Parallel Ballast Wiring Diagram

4 Lamp Instant Start Ballast (Wired in Parallel)

Factory wiring

Remove Wires from Fluorescent Lampholders Video