If the transmitter has a reset button on it, you will need to do a search for a matching ID number. Press the Mode button on the computer until it goes into the settings mode. Go to the screen where you see ID. Place the computer head about 8 inches from the transmitter and press the Reset button. You should see some numbers rapidly changing on the computer head. If not, press the Mode button and then the Reset button again. When the numbers on the computer stop changing and only one number is showing, the ID match is complete. Press and hold the Mode button until the computer head goes into ride mode.