Factory speakers and amp question

[WeekendPlinker]

I have an 02 Yukon
Non Bose but has the factory sub in the rear.

I have replaced the head unit with a pioneer 8600, front door speakers with a component setup, coaxils in the rear doors and replacement tweeters in the rear pillars
I've also replaced the rear sub.

Question is....
I wana add an amp to my components, coaxils and tweets.

Is their a factory amp I need to bypass or do I just wire from the amp to the speaker wires on the harness and cap the outputs from the head unit.

Thanks in advance

 

[danniboi]

There's a factory amp behind the glove box. I would say that the best bet would be to catch the speaker wires down by the kick panels and cut em there and run em to wherever your going to put the amp.

 

[RachelJWalker]

This link might help it is more for high pass crossover but does show factory wireing and pin location http://www.savagehomeautomation.com...ctory_High_Pass_Crossover_Bypass_Tahoe_02.pdf