First of all I had to remove the original speedometer and make room for my new dashboard.

To do that, in my case, I first had to remove the windshield, disassemble the main headlight, disconnect all the wiring and then remove the headlight housing. I also removed extra headlights as I will be replacing them with LEDs.

I took a lot of photos and measurements in this stage so I could sketch various versions of the dashboard. At first I taught I would model the whole thing in FreeCAD but it took me too much time so I proceeded with cardboard model.

Your particular motorcycle might be different, so if in doubt consult a service guide (I strongly recommend Haynes or Clymer)

When disconnecting the wiring (in my case in the main headlight) I used different colored cable ties to indicate which wires go together and to keep them kind of tidy. I suggest taking some photos so you can put all the wires and cables back to where they were originally.

Make sure to clearly mark/note everything so you are not left with a stray wire when putting things back together. If it does happen consult one of the service guides mentioned above.

Use torque wrench to tighten screws up to specification (see service guide).

If you are removing the handlebar (like I did) make sure to mark its original position and be careful not to damage any cords/lines.