• How to install the unit refer to: https://youtu.be/q6Pxf5sYl9g
  • Connect matching OEM connectors to the AC board of the unit. Depending on the model year, the 4 pin fan speed connector of the AC board may or may not be used. If your vehicle has the connector but our board does not have the matching connector. Please contact us.
  • If the temperature is backwards, ie, setting low temperature blows hot air, long-press 'MODE' button for more than 15 seconds will reverse the polarity.
  • The knobs are programmable. The press-and-hold function of the buttons except the hazard button are also programmable. How to program please refer to: https://youtu.be/OZhknvTLQeQ
  • To make connections to the head unit, just match connectors and/or labels. If on-screen AC control is not working, check if 8 pin connector with green and green/black or white and white/black wires is connected to the back of the unit.
  • DO NOT use external MIC unless the built-in and OEM one is not working
  • To retain OEM camera, connect male RCA labeled 'Camera' and female RCA labeled 'CCD Camera'. 
  • The sim card can be put into the back of the unit and also the sim card cable we provide. T-mobile would be better to work in our unit.