Do you have a question about the Kenwood KAC-5020 and is the answer not in the manual?
Connect the unit to the car radio using the supplied adaptor.
When installing to the car, install the unit securely for safety driving.
Connect speaker wires to terminals and avoid chassis contact to prevent shorts.
Connect the power lead (red) only after all other wiring is completed and checked.
Adjusts input sensitivity from 0.1V to 2.0V for various systems and receivers.
Details on maximum power output, power output at various THD levels, frequency response, and distortion.
Includes signal-to-noise ratio, input impedance, damping factor, operating voltage, current, dimensions, and weight.