Got my wireless steering control installed on my 86 a few days back. Plenty of time to get all of this done since my country had already went into lockdown due to COVID-19 two weeks ago.
Not too difficult, just had to patch 3 wires from the module to the head unit and power from the accessory. The buttons were then placed at the plaque area below the traction control buttons. Then a buddy gave a great idea - 3D print out a plaque piece which would slot the two buttons in.
Got the STL file from Thingiverse (thanks michaelxchristopher) and another friend made the necessary alterations to the design (thanks kev). Got it printed, did some additional fitting work with some sandpaper, finished the surfaces off with some trim protectant and it looks pretty good now.