Hi Frank, re the installation, you can put it anywhere that won't get too hot or too wet. I would suggest mounting it somewhere you can easily flip the switches and see the digital display light up. You will probably want to adjust it a few times until you are happy with your speedo accuracy.
The epoxy casing we have used is quite durable, it will take a bit of punishment. I smacked one quite hard with a hammer a few times and it still worked fine. Up to 50 degree celcius should be ok, but like most electronic devices, the cooler you keep it the more years you will get out of it.
The sensor plug is easy to find, look on the cover over the countershaft sprocket, and you should find a little black device held on by one or two screws, with a black wire coming out of it. This is the sensor. The wire is about a foot long, and has a 3 pin plug at the end.
You can remove the sensor in a few seconds with a 4mm hex (allen) key. You may have to remove the left side fairing, on some bikes you can just remove a couple of fairing bolts and get your hand in far enough to reach the plug. With any wires you install, be sure to keep them away from engine and exhaust.
Re adjusting the unit, set all the switches to 0 and your speedo will read normally. Measure your speed (or distance) against an accurate reference (freeway markers ideal) and then you should have indicated speed and actual speed. Just divide indicated by actual, and you will get a ratio (probably about 1.06 for a stock 'Busa) and then use our reference table to give you the new switch settings.
Then look forward to having a 100% accurate speedo. Once your rear tyre gets quite worn,
you might want to adjust it 1% or 1.5% to compensate.