Seicane Car Wiring Harness Plug Adapter Audio Sound Cable For Volkswagen Polo/passat/jetta/bora/santana/golf/touran/octavia/audi - Speaker Line - AliExpress
Wiring for Peugeot cars with ISO Adapter
audio - Peugeot 206 LX (2002), I have installed a cd player which works but it doesn't remember volume/clock settings - Motor Vehicle Maintenance & Repair Stack Exchange
Peugeot 207 (2006-2012) RD4 Head Unit pinout diagram @ pinoutguide.com