3rd Brake light flasher creates brake flashing effect from third brake light to catch the attention of drivers behind.
The flasher module is a microprocessor based circuit specifically designed for third brake light operations and packaged in a very tiny package so it can fit behind any third brake light assembly.
I have the blue/green PCM and the instructions diagrams that came with the product shows the pin location that each wire should connect to. Those pin locations were empty on my pcm. 😡.