- Mazda cx9 2009
I'm trying to install the pioneer 2550nex with PAC RP4-MZ11 & the steering wheel controls are all backwards. I cannot figure out how to program them, when it's suppose to be preprogrammed. The volume up button is track down and track down is display. It's all messed up. Can anyone please tell me how to correctly program them with the rp4-mz11.