I purchased a new Remocon RMC-105 universal remote fob from:
https://www.cruisingforremotes.com/
The FCC ID is: JLFTX4 310mhz
They preset the frequency and I programmed it to my Trimark RF receiver using the steps below.
The button and red LED are used to program new Fobs, not the keypad.
These are programming instructions are for the early Trimark system (2007 and older).
To program new fobs: Turn the ignition key on, then hold down the small programming button until the red LED comes on and then goes out (approx 5 secs). Then depress the lock button on each new Fob (you can program up to 4). Then turn the key off and test the Fob.
To program the key pad, you need the 5 digit authority code (if you need the authority code, send me a PM.)
Depress the 3 button for 5 seconds, you will hear a beep and the keypad back light will flash.
Enter the 5-digit authority code (now a steady beep).
Enter the access code number button (you can assign up to four codes, start with #1). Confirmation beep.
Enter your new 5 digit code. Another beep.
Reenter the new code. Another beep.
Make sure you have an entry key, lock the door and test the new code.