Optimus 120-2154, 120-2155 specs

Connecting Two Pairs of Speakers

If you are using both front and rear speakers, follow these steps to connect the harness with the 14-pin connector to the speakers.

12-2154 Only: Before connecting the speakers, remove the tape that holds the mounting sleeve in place and slide the sleeve off of the stereo. Then set 2CH/4CH on the bottom of the stereo to 4CH.

(White) - Front Left Speaker (+)

(White/Black) - Front Left Speaker (-)

(Gray) - Front Right Speaker (+)

(Gray/Black) - Front Right Speaker (-)

(Green) - Rear Left Speaker (+)

(Green/Black) - Rear Left Speaker (-)

(Violet) - Rear Right Speaker (+)

(Violet/Black) - Rear Right Speaker (-)

1.Connect the gray wire to the right front speaker's positive terminal. This terminal is usually marked with a plus (+) sign or red mark.

2.Connect the gray/black wire to the right front speaker's negative terminal. This terminal might be marked with a minus (-) sign or it might not be marked at all.

3.Connect the white wire to the left front speaker's positive terminal.

4.Connect the white/black wire to the left front speaker's negative terminal.

5.Connect the violet wire to the right rear speaker's positive terminal.

6.Connect the violet/black wire to the right rear speaker's negative terminal.

7.Connect the green wire to the left rear speaker's positive terminal.

8.Connect the green/black wire to the left speaker's negative terminal. Connecting One Pair of Speakers

For 12-2155: If you are using only one pair of speakers, follow Steps 1-4 in "Connecting Two Pairs of Speakers" above to connect the harness with the 14-pin connector to the speakers.