I want Bluetooth and a backup camera in my 2006 HHR. It currently has a factory pioneer system. Is there a way to replace the head unit and get the signal to the separate factory amp? most aftermarket units are powered. And i wonder if there is an adapter or something i can buy to make them work with the pioneer system.

Was thinking of getting this. And a mounting bracket. Any advise would help.

 

I'd check out these guys, they have all the correct harnesses and connections

https://www.crutchfield.com/m_266150/Car-Stereos.html

 

According to Crutchfield, you have to use the Axxess GMOS-LAN-04 Wiring Interface to connect an aftermarket head unit to the factory amp and sub.