I'm trying to install an after market radio(Nuevo ND 1736) in my 2009 toyota camrySE,the radio doesn't match the factory harness.I have a wiring diagram for the audio,the car comes with jbl amp,can I connect the headunit to the amp or do i need a special harness

 

The remote wire(dark blue) from the headunit;where does it get connected on the amp(which color wire)

 

I think you can try it out which one, I always do that... guessing which one