Optimus 120-2155, 120-2154 manual Black - Ground Red - + 12V to Ignition Yellow - + 12V to Battery

(Black) - Ground

(Red) - + 12V to Ignition

(Yellow) - + 12V to Battery

(Blue/White) - AMP Remote Turn on 500 mA MAX

1.Disconnect the cable from your vehicle's negative (-) battery terminal.

2.Connect the black ground wire to a chassis ground, such as a metal screw attached to a metal part of the vehicle's frame. Be sure that the screw is not insulated from the chassis by a plastic part.

3.Connect the red power wire (with in-line fuse holder) to a point in your vehicle's fuse block that has power only when you turn the vehicle's key to either the accessory (ACC) or START position. This connection turns on the stereo when you turn on the ignition or turn the key to ACC, and turns off the stereo when you turn off the ignition. This prevents your vehicle's battery from being drained if you leave the stereo on when you turn off the ignition.

4.Connect the yellow power/memory wire to your vehicle battery's positive (+) terminal or to a point in your vehicle's fuse block that provides a continuous source of 12 volts.

This connection provides power for the stereo's components (such as the CD player), and continuous power for the stereo's memory when the ignition is turned off.

5.Connect the blue/white wire to any optional equipment, designed to run from a switched source, that you want the stereo to turn on and off (such as a booster or a power antenna).

This wire does not provide power to the components. It simply turns them on or off. If you do not use this wire, secure it with a wire tie and do not let it touch metal.

Connecting an Equalizer/Booster

If you are connecting the stereo to a separate equalizer or booster, you need additional wires (not included).

To increase the total power output from your system, connect the R (right) and L (left) line output jacks on the back of the stereo and blue/white wire, if necessary, to the equalizer or booster.

Check the equalizer/booster's owner's manual for directions.