Well i just installed my rear speakers today. This is what i did....the factory harness has two things goin into it...the positive and negative and the wires for the mic. Wat is did was disconnect the mic from the stock speakers and i stuck em to the back of the aftermarket speakers. So i didnt have to cut or splice any wires. My question is is it better to have the aftermarket speakers hooked up mono with afbs or do it stereo witout afbs. Also how would i make it stereo instead of mono and having them hooked up the way i do now does that take away some power???