PAC OEM-2 manual Oem

OEM – 2

Universal sound system interface and controller

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.

Input wiring colors				Output wiring colors
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

1Connect these wires to an aftermarket radio (+) high power speaker output (typically 20 watts x 4 and higher).

2Connect these wires to an aftermarket radio (+) low power speaker output. (All stereos up to 20 watts x 4 or when wiring for #4)

3If 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.

4These wires go directly through to the outputs for convenience of wiring. The red and black wires supply power to the internal low voltage trigger.

5This 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.

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

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.

Aftermarket stereo		plug removed from factory stereo
102.7 FM
wht & wht/blk				wht & wht/blk
gray & gray/blk	nputI		Output	gray & gray/blk
grn & grn/blk		OEM-2		grn & grn/blk
vio & vio/blk		Pacific Accessory Corporation - Santa Ana, CA 92705		vio & vio/blk
connect blu/wht to new stereo's remote wire				blu/wht amplifier remote turn on

LF

(+)

(-)

Factory Amplifier

RF

(+)

(-)

LR

(+)

(-)

RR

(+)

(-)

rev. 10-7-02	Pacifi c Accessory Corporation - 1502 S. Santa Fe Street, Santa Ana, CA 92705
	techsupport@go2pac.com • Voice: 714-835-3022 • Fax: 714-835-3233 • www.go2pac.com	Page 1