Remote Control Keyless - Grey FAKRA Connector Female (RG58) Fakra connectors are based on SMB with an additional plastic housing that contains a mechanical locking device preventing disconnection in high vibration applications. Fakra connectors are colour coded for different applications including: GSM GPS Analogue Radio Phantom Radio TV1 TV2 Remote Control Keyless Entry Radio Controlled Parking Heating Bluetooth Radio With IF Output Neutral Coding