Add aux port to Sony XR C550 RDS car audio system

(Another, simple way to) Add, install aux (auxiliary) port to Sony XR C550RDS car audio system (car stereo system) A low cost way Download service manual for Sony XR C550RDS car audio system: You need these items to do this: Solder Soldering iron Solder Sucker (Desoldering pump) Screen wire Screwdriver (Phillips or Frearson type) 3. 5 mm stereo female socket (PJ 307 recommended) Insulation tape 100 works perfectly. Additional: Use DBass level 1, 2 + Bass level 1, 2 + Maximum Treble (level 4, 5 for full range audio amplification with deep, dynamic bass (Super high quality) Follow me: