From the bloggers at Techno RV.
Almost all of TechnoRV’s LED lights are what we call plug-and-play. By that we mean that to install them, you simply take out the old bulb and replace it with the new LED bulb. This even applies to our replacement fluorescent tubes which don’t need the ballast bypassing (more on this later).
The only bulb that you have to watch out for is the 921-CW/WW (stick style) bulbs. They are polarity dependent which means that they only work one way around in the light fitting. Unfortunately the 921 wedge style fitting is a bit useless in that it allows you to insert the bulb in either orientation. The good news is that you can’t damage it that way. If it doesn’t work, just take it out and swap it around.
To read the full story by Techno RV, click here.