HDRT must be connected before the PXAMG is powered on. Disconnect the PXAMG from the vehicles harness for 5 minutes. Verify the 8 pin DIN HDRT cable is securely connected at both ends before reconnecting the vehicle harness. Radio shows “DEV INIT” Gateway device is initializing This only occurs the first time the PXAMG is powered on. Wait a few minutes, cycle ignition off and on then enter SAT Mode. When I listen to the factory AM or FM radio there is only static, no audio. Factory antenna cable