Aerpro Wiring Harnesses are designed to make installing your new head unit quick and painless, with a two step plug and play process that means no manual wiring or damage to the original radio harness. Made up of a primary vehicle specific harness teamed with a secondary head unit specific harness (sold separately), Aerpro Iso Connectors allow you to match the pieces you need to suit a massive range of different vehicle and head unit combinations. The APP8SP4 harness is the secondary harness suitable for late model audio-visual Sony units 2013 onwards. To complete the set make sure you also grab the head unit specific harness to suit your chosen model.