no necessarilly. The hrns that I am pointing to on page 2 goes from the there, to the speakers. When you disconnect that hrns, you disconnect the amp from the speakers. You might need to run a wire from the small one behind the mirror to the woofer on the bottom, no biggie though.

By connecting the blue wires, you will turn the amps on and get sound, much easier.

 

That's where I get stumped on the blue wire thingy. I know where the blue wire is on the aftermarket wiring harness, but where do I connect the blue wire to the factory wires? Let me remind you, that someone already installed the radio and messed up all the wiring...