Greeting

I just installed the AVIC-F900BT into my 04 RSX type-S and everything seems normal but the BLUE/WHITE which is the "APM TURNED ON" switch.

I connected it to the Red ignition switch and the system gives buzzing sound when I start the engine and it stays on(I guess it has the same frequency as the engine rpm), though it's barely hearable when I run the car, it's still quite annoying at the stop light.

If I disconnect the amp turn on lead, of course, it's totally mute.

Is there and "Radio Turn On" Lead on the head unit?

Any solutions?

I had an 06 S with F700BT. I could feel there was a sound of the electrical background, but not a buzzing sound. Wondering how the previous owner did the wiring.

The blue and white wire only goes to an amp to turn the amp on. All your wires should match up color for color. If you are using a wiring harness.