Use a USASpec PA-12bmw dsp to connect aftermarket HU??

[70-k5]

Spliced it all back to stock. Acted the same but basically the only thing i was missing was the DSP to the CD player to get sound.

Problem that still exists now is the MID had no power. Doesn't do anything... The sounds turns on and plays for 15 seconds and then it shuts off.

[Lowblock]

Did you ever get this figured out? I finally finished my 540 last week, just need to fit my M bumpers then that car is finished.