: Ensure the 8 speaker wires (usually in pairs like Gray, Purple, Green, White) are correctly matched. Never touch these wires together or to the car's metal frame, as it can cause sound distortion or damage the internal amplifier.
If you purchased through Amazon, AliExpress, or eBay, the most reliable "link" is often the one provided by the seller via direct message. They frequently update their Google Drive or Dropbox links with the specific firmware and wiring diagrams for your model year. Initial Setup and "Factory Settings" Access autopica android player manual link