Who made the non-bose audio system for the 2003 Sedans? If the sedan have the non-Bose audio, the Bose can be installed without any trouble?

Thanks!

 

Clarion makes both the Bose and non-Bose HUs. The only thing Bose in the system is the Bose amp and speakers.

You can't simply install the Bose HU. You also need the Bose amp because the Bose HU outputs a low level audio signal, which needa amplification.

The Bose amp is the weak link in the Bose system anyway, so IMO, it's not a good idea to to replace the non-Bose HU with the Bose. They operate the same anyway, so you're not gaining any new features.

 

Thanks. Then I will think in just change the speakers later. An amp can be installed on the non-bose HU easly?

 

It can be done and it's not a difficult installation, but I don't know what your definition of "easy" is.