PAC C2R-CHY4 Installation Manual Download Page 1

Pacific Accessory Corporation - Santa Ana, CA 92705

[email protected] • Voice: 866-931-8021 • Fax: 714-835-3233 • www.pac-audio.com

4-21-10

J1850

Class 2

VPW

Class 2

J1850

1 0 0 0 1 1 1 0 1 1 1 1 0 0 1 0 0 1 1 0 1 1 0 0

1 1 1 0 1 0 0 0 0 1 1 0 1 1 0 1 1 1 0 0 1 1 0 0

Arbitration

EOD

CRC

1 0 0 0 1 1 1 0 1 1 1 1 0 0 1 0 0 1 1 0 1 1 0 0

1 1 1 0 1 0 0 0 0 1 1 0 1 1 0 1 1 1 0 0 1 1 0 0

Class 2

Class 2

J1850

Radio Replacement Interface 

with Nav Outputs for all Chrysler 

Dodge / Jeep CANbus Vehicles With 

or Without Premium Audio Systems

C2R-CHY4

1. Only one of the two provided radio harnesses will be used.  Remove the factory 

    installed radio to determine the correct harness for your particular vehicle.

2. 

Vehicles without a factory amplifier:

 Connect the aftermarket radio’s front and 

    rear speaker wires to the 22 pin plug.

3. 

Vehicles with a factory amplifier: 

The factory amplifier only accepts two audio 

    channels (left and right). The amplifier’s fading is controlled by data communication 

from the factory radio. The aftermarket radio does not have the ability to control the 

amplifier’s fader. Connect the 

front outputs of the aftermarket radio

 to the 

rear inputs of the 22 pin radio connector

. This will 

allow navigation voice prompts and Bluetooth calls to be heard. The rear speaker outputs of the aftermarket radio are not used. 

4. The accessory output wire is located on the 11 pin CAN INTERFACE harness - connect this wire to the radio’s accessory wire. The 

accessory wire su12v, 1 amp max when key is in the accessory or ignition position (fig. 1: If more current is needed).

5. 

11 pin plug (to CAN INTERFACE):

Blue/White - Connect this wire to the radio’s amplifier remote output.  Connect this wire with or without OEM amp 

1. 

present! This connection is VERY IMPORTANT! Some of the C2R-CHY4 

features will not function if this wire is not connetced!

White/Green - SWC output.

2. 

Green - Connect this wire to the radio’s reverse input wire only.

3. 

Orange/White - Connect this wire to the radio’s Illumination input wire only.

4. 

Violet/White - Connect this wire to the radio’s VSS input wire only.

5. 

Red/White - Connect this wire to the radio’s parking brake input wire only.

6. 

Note: Do not connect these wires to any circuit other than the radio’s wire harness.

6. 

11 pin plug (to SWC INTERFACE):

 

This  is  a  quick  connection  to  a  radio  specific  SWC  interface.    No  additional 

connections are necessary other than radio control connections.  Plug the radio 

specific SWC interface in to this connector and program the radio specific SWC 

interface for version 2.  Do not cut the loops.  Refer to the SWC interface instruction manual for the radio specific control function 
programming order.

7. Refer to the aftermarket radio’s instruction manual for testing VSS, Reverse, Parking Brake and Illumination outputs.  For the most 

current and Up-to-Date application guide please visit www.pac-audio.com

Fig. 1

(using a SPDT relay)

85

86

30

87

87a

Ground

High Current 12v

(Fused)

12v Acc.

From

Interface

New High 

Current Output

Diode 1N4005

or equivelant

9

1

2
3
4
5
6
7
8

10
11

Accessory Output

+12volts 1amp max.

Pacific Accessory Corporation

Chrysler Radio Replacement Interface

2005 & up

9

1

9

1

2
3
4
5
6
7
8

10
11

9

1

SWC Interface. Program for V

ersion 2

Radio Specific Steering

Wheel Control Interface

(Sold Separately)

Program SWC 

Interface for Version 2.

CAN INTERF

ACE

Navigation outputs and 

Amplifier Remote Input

See Chart for wire color

descriptions.

Radio Connections.  See aside 

Chart for color description.

Yellow

B12v

Black

Ground

Blue

Antenna On Input

White

Front L + input

White / Black

Front L - input

Grey

Front R + input

Grey / Black

Front R - input

Green

Rear L + input

Green / Black

Rear L - input

Purple

Rear R + input

Purple / Black

Rear R - input

(Read  the  Installation  Notes  before  making 

connections to the provided radio harness)

CAN Interface Connection Chart:

Red

Acc. Output (1 amp)

Red / White

P.B. Output (-)

Purple / White

VSS Output (Pulse)

Orange / White Illum. Output (+)
Green

Reverse Output (+)

White / Green

SWC Output

Blue / White

Amp Turn On Input

Installation Notes

Radio Connection Chart

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