?Note: Due to the conversion of current, this product is only suitable for the Toyota RAV4 / Toyata Tundra / Toyata Camry (Android) Car radio in our store ?If your car has a JB L sound system, then you need to purchase this JB L adapter to decode its sound, otherwise there will be no sound; ?When the JB L adapter and its harness are used, the power cord in the unit package you purchased is not needed. ?When connected to this JB L adapter, please turn on the amplifier function of this unit, the operation path: Click "Setting" on the main menu - click "Car infotainment" - click "Sound" -- ---- Click on "Balance" - ----- open the "Ex Amp" switch. ?If you have any problems during the installation and use, please feel free to contact us, we have a professional technical staff to answer your questions, thank you!

If you have any problems during the installation and use, please feel free to contact us, we have a professional technical staff to answer your questions, thank you!. When the JB L adapter and its harness are used, the power cord in the unit package you purchased is not needed. When connected to this JB L adapter, please turn on the amplifier function of this unit, the operation path: Click "Setting" on the main menu - click "Car infotainment" - click "Sound" -- ---- Click on "Balance" - ----- open the "Ex Amp" switch. If your car has a JB L sound system, then you need to purchase this JB L adapter to decode its sound, otherwise there will be no sound. Note: Due to the conversion of current, this product is only suitable for the Toyota RAV4 Tundra Camry(Android) car stereo in our store .