Connecting audio jack to switch lite directly with a 0.1 mm wires

[Retza]

The connector for the card reader is broken on my switch lite, so I desoldered it and want to solder the wires directly to the audio jack board. I also removed the connector on audio board to expose six points. What points on the switch do I have to solder to for this to work? I tried soldering to the first six points following the flex cable traces and it worked, but for some reason the left earbud is much quieter than the right. And the problem is definitely not in the headphones and I cleaned the connector with alcohol. Then I noticed that the third trace on the flex cable led nowhere and now I’m even more confused and don’t know which way to dig. Any help will be appreciated!

 

[jkyoho]