This information may not apply with some LG models or other air conditioner brands.

Be sure to properly discharge the capacitor!

Convert a Window AC for a CoolBot or InkBird Controller (for cold storage / cooler / freezer).

Didn't mention this in the video... Black line voltage wire and brown compressor wire are connected to the relay on the board. The relay allows low power on board to energize an electromagnet which closes a latch. Closing the latch allows the high voltage to flow through the circuit from the line voltage to the compressor. The black and brown wires... Along with the black fan wire are connected together.