I ordered the following from Amazon: Product details Special Feature Instant On Light Type LED Wattage 7 watts Light Color Daylight White Brand WYZM Connectivity Technology Infrared [Voltage]This tube light is double end powered,and suitable for 120 only,not for 12V.Please pay attention to your voltage before purchase to avoid return it. [Energy Saving]This LED tube lights are low-cost,environmentally friendly alternative,reduce your energy and save your power bill than equivalent fluorescent tube lighting. [Easy Installattion]The removal of ballast and rewiring for the installation was very simple. Must bypass ballast and rewire your fixture before you insert the led tubes.Wire positive one end and negative to the other end.
That looked like what I wanted, and it was very hard to find an 18 inch tube that was direct wire.
But it wasn't. The tubes that came said Plug-Play on them, but came with (unusually clear) instructions to remove ballast and rewire. So I did. They light but are very dim.
I emailed the manufacturer who replied quickly that these are PlugPlay and I should not rewire. I can return them but so far haven't found a replacement.
Will they fail, not having a ballast? And is that why they are dim?
I'm sure I can return them, but wondering.