I haven't ever actually dug into the rear panels and gotten to the amp yet. Is the connection from the head unit to the factory amp via RCA wires already, just perhaps without the male tips on the ends?

So if I wanted to keep the factory amp running my speakers as it is now, but tap into the signal to add a subwoofer amp, would I do the same thing but leave the one set of wires bare to be reinserted to the factory amp? The Kicker amps I have looked at accept speaker wire as high-level inputs, so could I simply tap into the wires and diverge them into two?

Sorry if this doesn't make sense, not sure how to word it.

And thanks again, it is very nice to have such a knowledgeable source on here!