I am adding an outboard sub to my 2018 911 Turbo with Bose. I am looking for help on how to identify which wires on the stock amp are speaker-level OUT for the stock sub. Also which wire to tap for remote-power-on.

Thanks for any tips!

 

I was able to look up the wiring diagram by setting up an account with PIWIS TSI. In case someone else searches on this someday, the 991.2 Turbo Bose amp speaker level outs to the under dash subwoofer are on the main amplifier under the passenger seat and:

+ lead is YE RD (yellow w red stripe) at terminal A16 (16th terminal from left)
- lead is YE BN (yellow w brown stripe) at terminal A4