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#golfmk3 #jettamk3 #stancemk3 In this video I show you how to diagnose relay 30 of a 3rd generation Golf or Jetta, this relay is vitally important for the correct operation of the engine and the ECU. All about relays and fuses: https://bit.ly/3iHlsJu Follow me for more content: Instagram: /stancemk3_ Facebook: /stancemk3 What I use to record videos: Xiaomi Poco X3 Pro cell phone - https://amzn.to/3EDpknX Cell phone tripod - https://amzn.to/39t7HZD PowerDeWise Microphone - https://amzn.to/3AxBqMX