PAC OEM-2 manual Input

2) Adding an aftermarket amplifi er to a standard factory radio that does not have factory amplifi ers

The factory radio speaker outputs are connected to the OEM-2 inputs and the new amplifi er is connected to the output side of the OEM-2, using the four RCA jacks and extension cables. Referring to the wire color chart, connect the factory radio speaker (+) outputs to the solid color wires and the (-) outputs to the black-striped wires. Example, LF speaker outputs of the factory radio connect to the white wire (+) and white/black (-). Continue for the remaining channels. The OEM-2 provides an amplifi er turn on signal. To use, connect the blue/white wire on the OEM-2 input side to one of the positive speaker wires or to any source that provides 5 volts DC or greater. The blue/white wire on the output side will provide 12 volts to turn on the new amplifi er. Connect the red (+) and black (-) wires on the input side to switched vehicle power and ground. Adjust the output level controls as needed using a small screwdriver.

	Factory stereo
	102.7 FM
			white & wht/blk
			green & grn/blk
			violet & vio/blk
Connect blu/wht wire to any
speaker wire output of factory			gray & gray/blk
radio (+ or -) for remote turn on
for new amplifier.
		blu/wht

Input OEM-2

Pacific Accessory Corporation - Santa Ana, CA 92705

Output

LR

LF

(+)

(+)

(-)

(-)

RR

RF (+)

(+)(-)

(-)

RCA out to new amplifier

blu/wht 12 volt remote output

New subwoofers

(+) (-) (+) (-)

New Amplifier

3) Adding after market amplifi ers to a factory premium amplifi ed system (Bose, JBL, etc.)

Referring to the wire color chart above, connect the audio output leads of the factory stereo to the input of the OEM-2, using the red striped wires as the positive input and black-striped as negative. Most premium systems use a low -level signal from the stereo to the factory amplifi ers, therefore use the low level input of the OEM-2. Some factory-amplifi ed systems use common audio returns and grounded shields like for instance, GM/Delco Bose vehicles. Do not cut the shield wire or attempt to use it as an audio signal wire. Determine if your system has two common audio return wires, one for the front channels and a second for the rear channels. If so, connect the negative input wires (black-stripe) for the front channels of the OEM-2 to the common audio return wire in the vehicle for the front channels. Do the same for the rear channels. If the vehicle has only one audio return wire for all channels connect all of the black stripped wires to it. The output level controls can be adjusted with a small screwdriver. Connect the red (+) and black (-) wires on the input side to switched vehicle power and ground.

	Factory stereo
	102.7 FM
			wht/red & wht/blk
			grn/red & grn/blk
			vio/red & vio/blk
Connect blu/wht wire to
factory amplifier remote turn			gray/red & gray/blk
on. Example: some Fords
have a 5 volt remote turn on.
		blu/wht

Factory amplifier

Input OEM-2

Pacific Accessory Corporation - Santa Ana, CA 92705

Output

LR

LF

(+)

(+)

(-)

(-)

RR

RF (+)

(+)(-)

(-)

RCA out to new amplifier

blu/wht 12 volt remote output

New subwoofers

(+) (-) (+) (-)

New Amplifier

4) Installing a radio with fl oating ground speaker outputs to a common grounded speaker system like the early Fords.

Referring to the wire color chart, connect the new stereo positive speaker outputs to the red striped wire on the input side of the OEM-2. Connect the negative speaker outputs to the black-striped wires of the OEM-2. On the output side of the OEM-2 connect the red-striped wires to the vehicle positive speaker wiring. The black striped wires on the output are not used. The negative side of each speaker is either common to each other on one wire or two in the factory plug or already grounded to the chassis. However it may be, make sure that they are grounded to the vehicle chassis. The output level control on the OEM-2 will not function in this confi guration.

Aftermarket stereo

102.7 FM

wht/red & wht/blk

gray/red & gray/blk

grn/red & grn/blk

vio/red & vio/blk

Input OEM-2

Pacific Accessory Corporation - Santa Ana, CA 92705

Output

LF

wht/red

(+)

(-)

RF

gry/red

(+)

(-)

LR

grn/red

(+)

(-)

RR

vio/red

(+)

(-)

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 2