Hello everyone,
I finally decided to replace my Symphony headunit with Pioneer MVH-A210BT because I need the bluetooth function, usb and the screen.
I've bought the correct leads (Autoleads), RCA, fuse tap where I used the interior lights with one 10amps and another of 7.5amp, the amplifier connected to the permanent 12v (not the ignition), RCA cables all connected properly.
The problems: NO sound from Front right speaker and Rear left speaker. Everything else works including subwoofer, bluetooth, etc.
I can hear a pop noise when I start the headunit and a buzz noise until I play some music.

Can someone please help me?

Thank you!