I pulled some Bose speakers out of a Cadillac and I put them in the rear of my 02 Monte Carlo and the harnesses don't hook up only for the rear.

This is the cord coming from my car Coming From The Car Photo by azwarren97 | Photobucket



This is the cord for the speaker Bose Speaker Photo by azwarren97 | Photobucket



Thanks guys

 

Even though GM used Bose equipment, the way Bose set up the sound systems are different in each car so the use different speaker amps and wiring.

 

You could always trash the factory harness and either hook the wires up directly to the speakers, go back to that Cadillac and take the harness from it or get insellated female butt connector and crimp them in! Any of these will work.