...it is wise to park the wipers mid screen and kill the power... setting the cam on the gear wheel within the motor out of position so that it does not break the new park switch. Adrian@
The old switch was in a right state, it practically fell apart! Bit of a faff fitting the new one, but it went on ok Applied plenty of grease to try and protect the connections Now with new wiper arms and park switch I have fully functioning wipers Just as well, it's Ping down!