i have the 6 disc bose stereo and when i removed it i noticed it has 4 connections running to it. the wiring harness i was told to buy only has 2 different places to connect to. i think the other 2 simply run the disc changer but i was wondering if anyone can confirm this or if i have the wrong wiring harness. thanks

 

Look at this thread I started.

https://g35driver.com/forums/audio-video-electronics/157269-i-have-working-nav-voice-bt-alpine-hu.html

It will show you what all four connectors are. If you didn't have Nav, Bluetooth or Steering Controls, they are useless to you. You can use the SAT connector as the other end is in the trunk.

 

Two connectors are for the power and speakers - your adapters fit those - while one is sat wire and the other is the steering wheel control, which you may need if you got a PAC steering wheel interface module.

 

that was very helpful... thanks