It is a communications system.
You can get a full parts schematic for your 00LT on line. i use MAX BMW.
here is a link to a thread about 00LTs:
One of the first things many people do is install a HID low beam. I over ran the stock low beam around 30MPH. You will wind up buying a pair of HIDs since they are packaged for auto etc. I think I paid around $50 for my pair?
if I remember correctly, the low beam is at the top of the head light?
Oh. And to remover the "top cover", necessary to install HIDs, you have to pop out the map light as there is a screw behind it.
You NEED a cordless screw driver with a "clutch".
You will need a small mirror to look under the bottom handle bar covers to see the screws to remove them.
The large torx bits you need can be found at place like Auto Zone.
I do not remember what the oil filter "socket" is. But you can take a new filter to Auto Zone and buy what you need there.
To change the front pads we have to take the calipers off.
The latch for the trunk will break unless you modify the curved latches.
With the stock shocks you have to go SLOW! over speed bumps.
When i used sport tires on my 00 I would easily start scraping the foot peg and fairings thru corners.
Ron left a great link in the tire section that explains what causes cupping on MC tires.
It will not start if the kill switch on the handle bars is in the OFF position; if the side stand is down; if it is in reverse.
The middle position on the switch for the seat is OFF.
You do not need a special tool to turn the BIG nut on the bottom of the gas tank.
The Lts take a special rear tire. Make sure the rear tire is the correct one.