What I would like to do is tap into this harness(and not the factory wires) then add a line output converter, audio control lc2.
I have already upgrade the factory door speakers with the Alpine S-S65C speakers. Now I want to add one or 2 sub woofers.
I just experinced a similar problem. was able to get the stripped screw out. Then purchased honda bolt-washer part number 90001-S10-A00. After that I had to retap the bolt hole with a M5- .08 tap. The thread on this bolt hole was 5mm in my car. I hope this helps someone else