@ryder
See if this helps clarify things:
Jumpers are used with both Nordost and Audioquest diagonal speaker connections and jumper connections are the same for each, i.e, from upper to lower speaker binding posts (+ to + & - to -).
For the 2 speaker cable leads going to each speaker...
The Nordost method has + (red) leg going to the corresponding (+) BOTTOM binding post and - (black) leg going to the corresponding (-) UPPER binding post.
The Audioquest method is opposite, i.e., it has + (red) going to the corresponding UPPER binding post and - (black) going to the corresponding LOWER binding post.
That’s all there is to it.