I think the explanation on the image is quite clear, you need to short the 4 pins, both pins from A must connect to both pins from B.

now the structure does not state if both A pins are shorted together , same thing applies for B, but the drawing suggest that they are not, because if they were , they would have pointed to only a single Pin from A to be shorted with a single Pin from B, so this makes me think that those 4 pins are not connected in anyway, but to be safe try this

- connect only pin from A to the one facing it from B, and see if that works ( unlikely)

if that fails , then you need to short all 4 pins together, an easy work around is to take a coin (50 cents 10 cents) whatever you have at your country that will be big enough to cover all 4 pins,  and place it on top of those 4 pins, it won't be an easy job for 1 man to use hold 2 wires while flushing the control board.  whatever you use, make sure it does not touch anything else except for A and B.