L-JCD patch chord can connect K518 with car OBD, and then you can program keys for Dodge and Maserati. For Dodge: You can use a L-JCD patch chord to connect K518 with car before program,and then enable to program smart key of Journey(2018-) For Maserati: To support the key programming of new car models (2018 / 2018-), the K518 needs to be connected to the car OBD port using the L-JCD patch cord.