Any links and procedure how it was done ?
Sent from my Redmi Note 4 using Tapatalk
Connect the antenna plugs (might need the newer 'button' style for your HU rather than the barrel style shown in the pic, or physical adapter
like this) to your HU and the OEM antenna wire in the car.
Blue wire goes either to your HUs remote line (usually pin 5 and blue, active whenever the Hu is on), or if your HU has it, the power antenna line (often blue/white and active only when Hu in radio mode)
If the HU supports things like RDS TA while playing other sources, I'd go with the remote line even if power antenna line is present..