When assembling the wiring for the relay assembly, only one caution must be taken.
As can be seen in the photo, I tried to keep the colors for each filament separate, ie, low beam using yellow wiring and high-beam using red wiring.
To achieve this goal - it was necessary to swap two of the connectors inside the homemade male plug assembly. The female spade connectors within the plug can be removed by using a very tiny screwdriver to depress the retaining tang - which is accessible in a small slot from the front of the plug. The connectors to be swapped (and only on the male plug) are the two outermost ones - the center one stays where it is.