simple audio installation in my 2000 bose-equipped max

alrite im replacing the speakers and head unit in my 2000 bose-equipped, and im not putting an amp or sub at all (im taking out the stocks)

this is what i got
blaupunkt san jose
infinity reference 6000cs
infinity kappa52.5i
wiring harness
antenna adapter

now
i believe this is what i do, correct me if im wrong:

connect the loose wires from the Blaupunkt and connect to the loose wires coming out of the wiring harness
then snap in the wiring harness to the OEM harness/cable
BUT, how do i integrate in the new speaker wires that i've run from each crossover? do i tap into the stock? if so, how? or do i even need aftermarket speaker wire at all?

plz help, i'd really appreciate it

thanks.