Can you post a picture of the switch and i will be able to tell you.
Ok the grey wires are live and neutral so joining these together will blow it.
Looking at the switch the grey wires are at the top so looking at the left grey wire you need to join this up with the wire under it.
Then the grey wire on the right join this with the wire under that and this will bypass the on/off switch.
Let me know what happens.
How have you got on with the washer?