As mentioned above, the trick here is to remove the side AC vent & vertical AC tube. Doing this exposes the ignition switch assembly from the side/top, which enables you to see, and reach the 2 annoying screws which secure the electrical component into the back of the barrel.
With the vent out of the way, it’s fairly easy to get your arm through the gap and loosen the 2 screws holding a 3mm slotted bit.
One thing that caught me off guard when I did this was the quality of the spare electrical component I ordered – the edges of the pins were rough, and it was impossible to clip it into the back of the barrel. Sand paper fixed that!
