not an easy task to make the parrot perform as designed in the X
2 ways I used to do these:

1) interrupt the speaker wires back at the factory amp via the parrot main control module, it basically provides input and output wires to isolate the speakers with relays while providing amplified signal to speakers. this requires 8 speaker wires to be ran from front to back...pain.

2) use the mute wire from parrot to tag the oem mute wire in phone molex on back of radio, find door speaker wire in driver kick panel, then use the same input/output from parrot brain to send phone signal to door speaker (woofer).

method 2 was my solution to method 1 taking too long.