Stealth sound system install on a Duster

The stock radio 12 volts when switch is on = red. Aftermarket head unit should also use red. Stock dial illumination is orange. Aftermarket should also be orange but if not they are labeled.
Aftermarket unit will also need a 12 volt hot at all times for its memory. That will be a small yellow wire in the under dash harness which is your dome lamp circuit.This is the only wire you will need to locate/identify. Very likely a yellow on the aftermarket too, or pink maybe, but again they should be labeled.