So the PAC AOEM-GM24 is an interesting device, but it isn't wired properly for the 2000-2001 Grand Prix Bose amp harness.
Ordinarily, it just plugs in between the car harness and the Bose amp. All 24 wires are connected straight-through, and 8 wires are tapped off that go to a connector to the AOEM adapter. Inside that adapter there are 4 resistors, 4 isolation transformers, 4 attenuator pots, and 4 RCA female output cables for line outputs.


Unfortunately, it taps the wrong wires at the 2000-2001 Grand Prix Bose harness, so the best use for this is to use only the short wiring harness to cut any wires you need to tap, and avoid cutting into your car's harness. I've confirmed that the Bose amplifier provides amplification for all eight speakers in the car. (For some time I had suspected that the front speakers were actually amplified by the head unit and that the Bose amp merely passed-through those signals. But it doesn't do that. The Bose amplifier provides amplification for all four corners.)

To bypass the Bose amp for only the front speakers, you can do it with just the short harness from the AOEM-GM24. However, the speaker wire lines going out to the rear "sub" 6x9 speakers and the speaker wire lines going out to the *left* side trunk round speaker are located on the other 8-pin connector, which also carries +Battery power and -Ground to power the Bose amp. If you're also going to bypass the Bose amp for the rear speakers (to drive aftermarket speakers, for example), you can just run separate wires from your amp to all of the trunk speakers, since everything is in the trunk. If you really wanted to connect to the 8-pin connector, you can get that with the Metra 70-2054 harness.


That harness contains both the 24-pin and the 8-pin connectors, but it appears to be missing a number of wires and looks only good for connecting up the wires going out to the speakers. The 8-pin harness in the Metra 70-2054 is the same way, having only the connectors going out to the speakers and lacking the +Battery and -Ground connections. Even so, the Battery and ground wires in the stock harness appear to be around 12 gauge, and you really ought to run something bigger if you're going to run an aftermarket amplifier. The Metra harness also costs more than the AOEM-GM24 device, so the short bypass harness in the PAC AOEM-GM24 really appears to be the best choice for running aftermarket speakers and amplifier without running new speaker wires and without cutting into the factory harness.