Under the passenger seat is the stock power amp. What a hunk of shit. 300Watts my ass....
Anyway, because the Hi-Line radio uses fiber optic, we don't have a choice in leaving the stock amp in place. Basically, the stock amp is now going to be a Line Level Converter. To my knowledge, at this time, no one make a converter box to translate the fiber optic signal into a line level input. For any amp you ever plan to install, you either need pre-amp outputs from the radio its self, or you need line level outputs.
The only thing we're interested in on the stock amp is the green wiring harness. The green wiring harness is the speaker outputs.
GREEN is +
GREEN with a WHITE stripe is -
ALL THE FUCKING WIRES ARE THE SAME COLOR. Awesome, huh!?!? So, in order to figure out WTF goes where, you need a battery. I like a 9v. If you touch the batter to a + and the correct - you will get a "pop" in the speaker. This will tell you what wires go where. MARK THEM CLEARLY.