AirbusH - Welcome the the Alpine club
I installed mine about 2 weeks ago and only did the coding a few days later... What a difference the coding made and loving the difference of the kit altogether.
I had the same issues with Left vs Right speakers also being a RHD but just swapped the pins / cables around in the connector block to the AMP
Quick question, any idea what the other numbers on the selector switch do? I know the following from the manual...
1 = F20/F21
5 = F30/F31
and now 3 - F21 too?