English 67Accessories/Installation ProcedureAccessories1..........12..........1 (2m)3..........14*1..........25*2..........26*2..........17*3..........1 (3m)* 1 DDX4021BT/DDX4051BT/DDX3021/DDX3051 only.* 2 DDX6021BT/DDX6051BT only.* 3 DDX6021BT/DDX6051BT/DDX4021BT/DDX4051BT only.Installation Procedure1 To prevent a short circuit, remove the keyfrom the ignition and disconnect the -battery.2 Make the proper input and output wireconnections for each unit.3 Connect the speaker wires of the wiringharness.4 Take Connector B on the wiring harnessand connect it to the speaker connector inyour vehicle.5 Take Connector A on the wiring harnessand connect it to the external powerconnector on your vehicle.6 Connect the wiring harness connector tothe unit.7 Install the unit in your car.8 Reconnect the - battery.9 Press the reset button.10 Perform the Initial Setup.2WARNING• If you connect the ignition wire (red) and thebattery wire (yellow) to the car chassis (ground),you may cause a short circuit, that in turn maystart a fire. Always connect those wires to thepower source running through the fuse box.• Do not cut out the fuse from the ignition wire(red) and the battery wire (yellow). The powersupply must be connected to the wires via thefuse.After the InstallationAfter the installation, perform the Initial Setupby referring to the instruction manual.¤• Mounting and wiring this product requiresskills and experience. For best safety, leave themounting and wiring work to professionals.• Make sure to ground the unit to a negative 12VDC power supply.• Do not install the unit in a spot exposed to directsunlight or excessive heat or humidity. Also avoidplaces with too much dust or the possibility ofwater splashing.• Do not use your own screws. Use only the screwsprovided. If you use the wrong screws, you coulddamage the unit.• If the power is not turned ON (“MiswiringDC Offset Error”, “Warning DC Offset Error” isdisplayed), the speaker wire may have a short-circuit or touched the chassis of the vehicle andthe protection function may have been activated.Therefore, the speaker wire should be checked.• If your car’s ignition does not have an ACCposition, connect the ignition wires to a powersource that can be turned on and off with theignition key. If you connect the ignition wire toa power source with a constant voltage supply,such as with battery wires, the battery may bedrained.• If the console has a lid, make sure to install theunit so that the faceplate will not hit the lid whenclosing and opening.