The way to tell the difference between them is the circuit board number. Circuit board ID AIG16RK means you have a 124. Circuit board ID AIG18RK2 means you have 142.
Programming Instructions:
- Before you begin, your system must be in a disarmed state and you must know where your valet switch is located. Perform the following steps:
- Turn the vehicle's ignition to the "on" position
- Within 7 seconds of step 1, press the valet switch 5 times. The alarm should respond with a long siren chirp.
- Press the large/ lock button on your remote (for Freedom 500, C-5, and K9 Mundial2, press 2nd or 3rd channel. For MARS-22, press Lock & Unlock at the same time). The alarm should respond with a short siren chirp.
- Repeat step 3 for each additional remote that is to operate the system (up to 4 remotes).
Note: the system will automatically exit programming mode if it detects a 15 second period of no activity.