The D8125INV uses a special cable to for programing Inovonics wireless transmitters. This cable is no longer available however the cable can be made using 2 standard keypad harnesses.
The end of one standard Bosch keypad harness will be connected to the end of another standard Bosch keypad harness as described in the figure below.
D8125INV, FA113, FA202, FA203, FA203, FA204, FA205, FA207, FA208, FA209, FA210, FA216, FA223