This listing is for one (1) new in bag Whelen C399K1 OBDII CanPort Installation Kit for the Whelen Core system. This kit allows OBD integration and unlocks tons of more features from your Core, like Park-Kill, siren changing from vehicle inputs like braking or turn signals, and much more! This kit is compatible with the following, as per Whelen: 

OBDII CANPort™ Installation Kit for C399 for 2016-2019 Ford Interceptor Utility, 2020-2022 Ford Interceptor Utility used with Factory Option 61B, 2016-2020 Ford F-150, 2018-2022 Ford, F-250/350 2018-2019 Ford, F-450/550, Expedition and Transit 150/250/350, 2017-2019 Ford Fusion (All Models), 2020 Ford Fusion Hybrid and 2016-2017 Dodge Charger (Not for use with Core-R™ and Core-S™)