Flickering LED Candle

Step 3 Move the cathode wire

We won't be using the original circuit, which is a low-side switch that just flickers the LED off for a few milliseconds periodically. Carefully unsolder the yellow wire and move it to the LED cathode on the middle pin. The wire is really fine. Use a hot soldering iron to melt the original connection. Add a little fresh solder to the center pin. Then you can hold the wire against the center pin and reflow the solder joint easily.