The W210 B12 Freon pressure switch has 3 posts; the wiring connected to those posts are as follows:

1 - brown/yellow

2 - blue/red

3 - red/white


The above wires ultimately connect to the N22 pushbutton control unit:

1 connects to pin 29, bank 2 (negative; sensor comm)

2 connects to pin 16, bank 1 (refrigerant compressor)

3 connects to pin 7, bank 1 (positive; 5 volt)


To simulate a full refrigerant charge, which of the above 3 wires should be jumped?

Thanks.