I think there may be some confusion here. Firstly, thanks for the guide reference, which I have seen already, hence my request for clarification of the instructions. I have already removed the key barrel with no difficulty, and have removed the grub screw and the switch & connector assembly from the steering lock (into which the barrel fits), with the switch in position 1.
It is the instruction referring to the connector release hole that I am asking for clarification on.
Insert a small screwdriver into the connector release hole, keeping the screwdriver at the key end of the hole, and press to release the latch, at the same time as pulling / levering the connector off the switch.In the guide picture after connector removal, the latch is black, and it looks as if it should be pressed in, but mine does not wish to move in any direction, and to avoid breaking anything, I am going very gently, and I think perusal of the new switch will help.
