I've had mine out many times and have not had to pull the ignition housing.

But I don't have a radio or speaker
I do have an electric wiper , but its not n the way.

I remove the speaker grill to get my hand back there
and the choke cable.

I also added some 10/32 knurled nuts, a recommendation found on this forum

...pic...

..spare speedo pic...
Don't have to mess with any sockets or extensions