i just installed subs in my 07GTP w/ Monsoon. I hooked them up to the wires you indicated and did not have much bass. So tonight I hooked them to the blue and green wires going into the 6x9 and WOW!!!! My bass is set on negative 3 and it is still too much! So if your hooking up subs hook it up to those wires, otherwise if your hooking up full range speakers use the ones recomended in the post above!