03 QX4 Bose Radio DIN Harness Plugs - 3 of them

[waynorth]

So I am attempting to install an after market head into my 03 QX4 and after pulling it out of the dash I find that there is three DIN plugs that plug into the back of the radio, in the attached picture I show the three plugs in question. The first two starting from the left I have figured out, they are for speakers and assorted wires to power and run the radio. It is the third one on the right that I can not figure out what it is used for. It has three wires coming out of it ( a brown with gray or white stripe, blue with green stripe and a solid red). Any help identifying what they are used for would be greatly appreciated.

https://photos.google.com/album/AF1QipN ... UoxX5ByyBU

https://photos.google.com/album/AF1QipN ... -g4rurTWq7

https://photos.google.com/album/AF1QipN ... zce-mnmHnO

Thanks

[heavy hitter]

I believe it was for the cassette player. If installing an aftermarket stereo....you don’t need to worry about it. It just hangs out in there

[waynorth]

Thanks for the info - much appreciated.