problem with steering wheel controls module

[cparker2591]

car: 2004 fx35

Head unit: Pioneer DEH-X6900BT

So i have the Axxes ASWC-1 steering wheel control module, i believe i have it all hooked up correctly. black wire to chassis, red wire to amp turn on from head unit, gray/red wire to pin 12, white/green wire to pin 13, and i spliced into pin 14's wire and grounded that.

steering wheel controls work just fine without the 16 pin plugged into the stereo bezel, once i plug the 16 pin in everything stops working, unplug it and it starts working again. anybody have any idea on why this is happening? if i didn't need my A/C controls id just leave the 16 pin unplugged lol

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