Delco Bose Harness

I'm wondering if the harness which plugs into the back of the delco bose camaro sound systems is a generic gm harness. Is there anything special about it or is it just the same setup as a regular GM stereo harness.

Also is the connector any different on other GM cars? I've only worked with the delco bose setup. I have an extra harness here just trying to determine a use for it.

Thanks for your help!!