Originally Posted by panman
I missed in these articles how the high tension wire is attached to the slip ring. If someone could please advise me I'd appreciate it.
The photograph below is of the relevant section of a slip ring I discussed in an earlier post:

[Linked Image]

As can be seen there's a hole in the brass segment. The output wire of the coil has a slightly smaller diameter so it slips into this hole from the right, at the center of the projecting section of insulator, resulting in either direct electrical contact with the brass or a very tiny gap for the voltage to bridge. The first few photos in the following post will remind you how the slip ring is oriented with respect to the output wire of the coil: