I believe the analog signals are sent out from the stock amplifier without cross-over. so that's why I just changed wire to RCA without crossover.
I'm not sure about the speaker in the front doors. I just replace them all

 

Hello Anakongkong,
thank you for your great job and posts .

As I'm xxxx of the original ask amplifier (non-bose) (broken, and repair wasn't succesful at all) I would like to replace it with an aftermarket amp and continue using the PCM 3.1 headunit.

How do you get the wiring / connection from the oem plugs from the car / PCM to your amp. Did you do the wiring by yourself or are there any plugs / connectors avaible on the aftermarket?

Thank you in advance for your support !


BR

Lars