You don't need the programming code to enter programming. As someone else mentioned earlier, power the panel down using the black slide switch near the lower left corner of the control panel. Now hold the tiny button (about half way up on the left side) in while you turn the power back on. You will be in the dealer programming mode immediately. Note that some early Z1100's have a wire jumper instead of a button. Just power down, close the jumper and restore power and you're in.