AEM X-Series Digital OBDII GaugeAEM's X Series OBDII gauge (PN 30 0311) puts multiple channels of data at your fingertips by reading the CAN bus stream of your vehicle's OBD port and transmitting those channels to the gauge display. It reads Diagnostic Trouble Codes (DTCs) and gives you the ability to clear codes. Wiring is as simple as connecting the gauge to your vehicle's OBDII port using the supplied connector! Because the X Series OBDII gauge reads OBDII parameters transmitted