✔This unit is an ISO standard double din size stereo and usually complete installation requires additional purchase of the following three aftermarket accessories.(not included in the package)

• Dash Kits for your car model. (Use to perfectly match the factory stereo dashboard opening.) If your car's dashboard opening size is double din, you don't need to purchase dash kits. Most brand dash kits use 170*97mm opening can perfectly match our stereo. Wire Harness for your car model. (Used to transfer your factory harness and ISO stereo wiring harness), Radio Antenna Adapter for your car model. (For transferring the factory antenna to the universal radio antenna interface).

✔You can find the correct aftermarket accessories by searching the year, make, and model of your vehicle on Amazon or Google.

✔ Troubleshooting Tips: The head unit powers on for several seconds, then shuts down automatically?

• Some cars'ACC wires controled by canbus or have a feature called " delayed shut off " for radio and other components.
• These cars may not be able to output stable 12V accessory power to our radio. You need to buy the right harness adpater which " Provides accessory power " for your car model. Like the "PAC" brand of wiring harness.
• Also, if you don' t want to purchase the adapter, you can locate acc power elsewhere in your vehicle, then connect the red wire there.

✔The necessary conditions for powering on the unit: The Red wire of our harness gets switched 12V power. ( Have to turn on car key ). The Yellow wire of our harness gets 12V power. The Black ground wire of our harness is valid. If you have Electric pen, you can test these 3 wire.

✔The car stereo has a memory function. If the ACC line(Red wire) and the B+ line(Yellow wire) are reversed during installation, the product will have no memory function after the power is off. The working voltage of this car stereo is 12V, it can't be used for big trucks with 24V.