This might not be very helpful. However, I do not know where the 'switch' is for the freon pressure.
The blue 'switch' is the one that could be jumpered when the freon level is low to check the compressor. i.e, if you jumper the cables then the compressor will engage even if the freon level is low.
The two wires at the top (white connectors in zip tie) could be jumpered to make the aux. fan run.
hope that helps... I'm not even sure if mine is still correct.. but it works fine so I'm not gonna do anything about it.