RedRiley.....  Good SPAM catch!

SPAM 

I'm fine using it

Not a good idea.  I didn't bother to read the blurb after looking at the diagram.

Enquiring minds might like to think about how the lights are actually switched....  The red cable marked "to battery" needs to be connected to the high beam side of the light switch ( perhaps better described as the live side of the high beam selector).  If wired as shown the high beam/auxiliaries will be on ... permanently...

Where I am the auxiliary lights are required to be separately switched.... so they can be turned off while the headlights are on.

I run two relays so that the circuits are independent.  The high beam relay is switched by the high/low beam selector while the aux relay is also switched by the high/low selector but runs through an external switch.  

My annual government inspection requires me to demonstrate that the headlights can be turned on and high/low beam is selectable.  If I have aux lights then they have to be switchable (on or off) AND only come on when high beam is on.

If you have a mix of driving/spots and fogs you have an extra issue in that you NEVER want the fogs and spots to be on together....

Cheers, Ian

PS OK I went back and read the entire article.  The Miniforum diagram at the end of the article is the one you should be using.  I would also switch the driving light trigger feed as they have done for the fog lights.

None of the factory fuses were intended for auxiliary lighting. You should install a separate fuse and relay for the added lights. Here is just one way to do it. Google it and you'll find other ways to do it. I personally would put driving lights on a separate switch if I ever wanted to have them on a car, which I don't . 
https://appraisalnewsonline.typepad.com/our_mini/2014/05/classic-mini-fog-light-wiring-loom.html

The fog/driving lights on my 1986 mini were never wired or installed.  I have purchased new ones.  Which post in the fuse block (four fuse) should they be wired to?