PAC OEM-2 User Manual

Oem – 2, Universal sound system interface and controller, Input wiring colors output wiring colors

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Pacifi c Accessory Corporation - 1502 S. Santa Fe Street, Santa Ana, CA 92705

[email protected] • Voice: 714-835-3022 • Fax: 714-835-3233 • www.go2pac.com

rev. 10-7-02

Page 1

The OEM-2 may be used in any one of four possible confi gurations and system types.
1) Replacing a premium factory radio with an aftermarket stereo and use the factory amplifi er and speakers.
2) Four channel line out converter for adding amplifi ers to a standard factory speaker system.
3) Adding aftermarket amplifi ers to a factory premium amplifi ed system (Bose, JBL, etc.).
4) Installing a radio with fl oating ground speaker outputs to a common grounded speaker system like the early Fords.

The OEM-2 also includes a remote turn-on for amplifi ers or a power antenna, providing 2 amps at 12 volts when 0.8 volts or greater is applied to the input side. This
is useful for low voltage triggers like those used in Fords or for automatic triggering when audio is present. The output “turn on” is delayed 1 second to prevent turn
on pops.

OEM – 2

Universal sound system interface and controller

White

1

LF (+) speaker (high power)

White

6

LF (+) low level output

White/red

2

LF (+) speaker (low power)

White/red

LF (+) common gnd. speaker output

White/black

3

LF (–) common

White/black

7

LF (–) common

Gray

1

RF (+) speaker (high power)

Gray

6

RF (+) low level output

Gray/red

2

RF (+) speaker (low power)

Gray/red

RF (+) common gnd. speaker output

Gray/black

3

RF (–) common

Gray/black

7

RF (–) common

Green

1

LR (+) speaker (high power)

Green

6

LR (+) low level output

Green/red

2

LR (+) speaker (low power)

Green/red

LR (+) common gnd. speaker output

Green/black

3

LR (–) common

Green/black

7

LR (–) common

Violet

1

RR (+) speaker (high power)

Violet

6

RR (+) low level output

Violet/red

2

RR (+) speaker (low power)

Violet/red

RR (+) common gnd. speaker output

Violet/black

3

RR (–) common

Violet/black

7

RR (–) common

Yellow

4

Constant battery

Yellow

Constant battery

Red

4

Switched power

Red

Switched power

Black

4

Gnd. neg. power

Black

Gnd. neg. power

Blue

4

Power antenna turn on

Blue

Power antenna turn on

Blue/white

5

Amplifier remote turn on 0.8 v min.

Blue/white

Amplifier remote turn on 2 amps max.

Orange

4

Illumination dimming

Orange

Illumination dimming

Input wiring colors

Output wiring colors

1

Connect these wires to an aftermarket radio (+) high power speaker output (typically 20 watts x 4 and higher).

2

Connect these wires to an aftermarket radio (+) low power speaker output. (All stereos up to 20 watts x 4 or when wiring for #4)

3

If the radio is high power (fl oating ground), connect these wires separately to each of the radio’s speaker (-) wire (do not connect (-) speaker wires together). If the

radio has a common ground speaker outputs, connect these wires together along with the radio’s speaker ground.

4

These wires go directly through to the outputs for convenience of wiring. The red and black wires supply power to the internal low voltage trigger.

5

This wire needs only a minimum of 0.8 volts to supply 12 volts on the blue/white wire on the output side of the OEM-2.

6

For convenience, the positive leads of the RCA are connected internally to these wires.

7

For convenience, the grounds of the RCA are connected internally to these wires. Not used with common grounded speakers.

Note: Some Chrysler/Dodge vehicles with a Infi nity premium sound system do not need any interface. If the speakers fade and balance correctly with this interface

installed, but you have very little volume, then you do not need this interface.

Referring to the wire color chart above, connect the speaker outputs of the new radio to the OEM-2, using the positive, solid color, and the negative black-striped
wires for all four channels. On the output side of the OEM-2 connect the solid color wires (+) and the black-striped wires (-) to the factory harness leading to
the factory amplifi ers. If there are common audio return wires (-) used in the vehicle for either the front and rear channels then connect the negative outputs of
the OEM-2 to them. If there is only one audio return wire for all four channels connect all the black-striped wires to it. Connecting the constant power (yellow),
switched power (red), ground (black), antenna trigger (blue), illumination (orange), and amplifi er turn on (blue/white) through the OEM-2 simplifi es wiring to the
vehicle. The output level controls can be adjusted with a small screwdriver.

1) Replace the factory premium radio with an after market radio/deck and retain the use of the factory amplifi ers and speakers

OEM-2

Pacific Accessory Corporation - Santa Ana, CA 92705

102.7 FM

wht & wht/blk

gray & gray/blk

grn & grn/blk

vio & vio/blk

(-)

(+)

(-)

(+)

(-)

(+)

(-)

(+)

LF

LR

RR

RF

Aftermarket stereo

connect blu/wht to new stereo's remote wire

Factory Amplifier

blu/wht amplifier remote turn on

wht & wht/blk

gray & gray/blk

grn & grn/blk

vio & vio/blk

plug removed from factory stereo

Input

Output

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