Gday here is my how to for spotlights for your Africa twin with both high beam or high/low beam.
These are the lights I used https://www.ebay.com.au/itm/404484504462?chn=ps&_ul=AU&mkevt=1&mkcid=28
And this is who I used for help and inspiration for my build... also an Aussie.
https://www.youtube.com/watch?v=ebnO7QbYtr4&t=519s
I'll will try and respond with any questions and I ask that you give me a thumbs up if you get something from this... cheers