Car: '03 Audi A4 with Bose, steering wheel controls. Radio: Pioneer AVH-P4200DVD.
I decided to add on the steering wheel controls, so purchased the PAC SWI-PS and SWI-CAN modules that are recommended for this purpose. I installed the modules, wired everything up properly, and eventually got it programmed. I had a HELL of a time getting it programmed properly. It would sporadically recognize the steering wheel inputs during program, sometimes registering them, sometimes not.
Eventually got it programmed, and it seemed to work fine (albeit with the engine running only).
Now, I'm no