What wheel size should I put into the computer?
  Can the Trail Tech Endurance odometer be reset for enduros or dual sport rides?
  What is the difference between the Endurance model and the old Panoram model?
  Why does the Trail Tech Endurance take a few seconds to show speed changes?
  What do I do with my stock odometer if I install a computer?
  Why can't I use a wireless cycle computer?
  How can I be certain the magnet and sensor are lined up correctly?

What wheel size should I put into the computer?

The first thing you need to know for any of the computers is the rolling circumference of your wheel.  If you have a 21inch front tire, this number is approx. 2205mm (221cm if your computer only accepts cm).  Since there will be some variation due to different tire styles and tread wear, you may make the measurement yourself by marking the front tire and the ground with a felt pen, then rolling the bike until the mark makes one full revolution and returns to the ground.  Then make another mark on the ground next to the mark you already put on the tire.  Measure the distance on the floor between these two marks and this will be the rolling circumference of your tire.  To convert this number to mm multiply by 25.4.

If you want your computer to be exact, set your computer wheel circumference to 2205mm (or whatever you determine from the above method).   Find a length of road where you know the exact distance.  Ride the distance and note the distance you computer reads.  Lets say your road was five miles and your computer showed it as 4.95 miles:

2205/X = 4.95/5.00
Solving for X gives you:  X=2205*5.00/4.95 = 2227mm

You can use this same method to make the computer match your stock odometer, but be careful - the stock odometers are not always correct.

What do I do with my stock odometer if I install a computer?

The stock odometer can either remain on the bike, or can be removed.  Removing the stock odometer will preserve it from potential damage (after all, they are expensive to replace), and they can always be put back on if you sell your bike.  If you choose to remove the stock odometer and leave the odometer drive in place, the Trail Tech kit has a plug/cap to protect the hole from dirt and debris.  There are companies that sell spacers to completely replace the odometer drive.

Why can't I use a wireless cycle computer?

There are two problems with the wireless versions:
  Generally speaking, the distance from the bars (where the transmitter would be located) to the sensor pickup location is too far for the transmitter.

  Even if the transmitter could pick up the signal, the ignition of the motorcycle would interfere with the wireless sensor - causing false triggers.

How can I be certain the magnet and sensor are lined up correctly?

If there is any uncertainty about magnet location (for instance, the sensor/cable assembly is being installed on a motorcycle model or year not covered with specific instructions), it is best to test the system before permanently affixing the magnet, and before screwing the sensor to the caliper mount.  

To do this, set the motorcycle on a stand so that the front wheel rotates freely.  Plug the computer into its mount.  Use the shim or a piece of tape to hold the magnet in place on the rotor where it will pass the sensor.   Please ensure that the magnet is flush with the rotor - if it moves into the path of the sensor, it may damage it.  While someone watches the computer, hold the sensor in place on the caliper mount by hand, and roll the wheel.  The sensor will be active at both ends (where the cable enters and at the extreme tip).  Don't place the magnet so it passes the center - there is a dead spot in the center.  The sensor can pick up the magnet between 3/4 and 1" away.