PAC RP4-HD11 Introduction And Features Download Page 1

Radio Replacement and Steering Wheel Control 

Interface for Select Honda Vehicles

RP4-HD11

 © 2018 AAMP Global. All rights reserved. PAC is a Power Brand of AAMP Global.

PAC-audio.com

Pacific Accessory Corporation

Page 1

Rev: 3

Date: 050818

Introduction and Features

Important Notes

Wiring Connection Chart

Illustration / Schematic

1.  These instructions apply to R.1.5.1.4 or later revisions. The revision info can be found on a small white sticker on the interface and 

packaging.

2.  The radio select rotary switch, on the side of the interface, must be adjusted to the proper radio setting before plugging the interface into the 

vehicle (see next page for setting chart).

3.  The interface comes pre-programmed for all of the vehicles factory SWC functions and does not require programming, unless you wish 

to re-assign the SWC functions, or utilize short press long press dual command functionality. The SWC can always be restored to default 

settings by pressing and releasing the program button on the side of the interface once, and waiting 7 seconds for the LED to flash 4 times.

4.  Vehicles equipped with factory navigation must follow the installation tech brief listed at 

www.pac-audio.com

 under the RP4-HD11 product 

page.

5.  Vehicles equipped with a 7” touchscreen: 

Once the factory head unit has been removed, you will no longer be able to set the clock 

or date on the factory display, as this is derived from the factory head unit. The date on the screen can be permanently removed by 

disconnecting the batttery to clear the screen’s memory. In order to set the clock you will need to disconnect the vehicles battery at 1:00, as 

this is the time the screen defaults to once it has been reset.

6. 

The LED will flash whenever a SWC button is pressed.

SWC Connection

See above chart for 
different radio type 
connections

x4

Acc On/

Programming 

LED

Programming 

Button

Wiring

SWC Connection

Interface Connector

Vehicle Connector

SWC Connector

Red / White

Parking Brake 

Output (-)

Purple / White

Vehicle Speed 

Output 

Red

Accessory Output 

(10 amp)

Orange / White

Illumination Output 

(+)

Green

Reverse Output (+)

White/Green

SWC Analog Input

Yellow

B12v

Black

Ground

Orange

Dimmer

Orange/White

Illumination

White

Front L + input

White / Black

Front L - input

Gray

Front R + input

Gray / Black

Front R - input

Green

Rear L + input

Green / Black

Rear L - input

Purple

Rear R + input

Purple / Black

Rear R - input

Blu/Yel

Kenwwod, Newer 

JVC

3.5mm Jack

Alpine, JVC, 

Clarion, Fusion, 

Pioneer, Sony, 

Boyo, Dual, 

Lightning Audio,  

Visteon or Advent

The RP4-HD11 interface allows the replacement of a factory radio in select Honda vehicles with MSCAN databus radios. Using this 

interface will retain factory features, such as steering wheel controls (SWC), the factory amplifier, and the ability to set the factory 

clock when the original radio is removed. Use of this interface also allows you to program two radio functions to each SWC button by 

using short press long, press dual command functionality. The RP4-HD11 also provides data bus driven outputs, such as accessory 

power, vehicle speed sensor (VSS), illumination, reverse trigger, and parking brake.

Aftermarket Radio Connections

See above chart for wire color 

description.

Cut for Non-Amplified systems

Vehicle Connections

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