User manual SONY CDX-MP40

[. . . ] Before making connections, turn the car ignition off to avoid short circuits. Connect the power connecting cord 6 to the unit and speakers before connecting it to the auxiliary power connector. [. . . ] notes on the control leads · The power aerial control lead (blue) supplies +12 V DC when you turn on the tuner or when you activate the AF (Alternative Frequency), TA (Traffic Announcement) function. When your car has built-in FM/MW/LW aerial in the rear/side glass, connect the power aerial control lead (blue) or the accessory power input lead (red) to the power terminal of the existing aerial booster. Memory hold connection When the yellow power input lead is connected, power will always be supplied to the memory circuit even when the ignition switch is turned off. notes on speaker connection · Before connecting the speakers, turn the unit off. Use speakers with an impedance of 4 to 8 ohms, and with adequate power handling capacities to avoid its damage. Do not connect the speaker terminals to the car chassis, or connect the terminals of the right speakers with those of the left speaker. Do not connect the earth lead of this unit to the negative (­) terminal of the speaker. To avoid a malfunction, do not use the built-in speaker wires installed in your car if the unit shares a common negative (­) lead for the right and left speakers. Check your car's auxiliary power connector diagram to make sure the connections match correctly. You may need to switch the positions of the red and yellow leads in the car stereo's power connecting cord. [. . . ] Place the hole A in the front panel onto the spindle B on the unit as illustrated, then push the left side in. Warning when installing in a car without ACC (accessory) position on the ignition key switch After turning off the ignition, be sure to press and hold (OFF) on the unit until the display disappears. [. . . ]