PAC RP4-GM11 Quick Start Manual

Introduction & Features
The RP4-GM11 interface allows the replacement of a factory radio in select General Motors vehicles with Class II radios.
Using this interface will retain factory features such as steering wheel controls (SWC), Warning Chimes, Rear Seat
Controls (RSC, select vehicles) and the BOSE amplifier (Standard or Premium) 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-GM11 also provides data bus driven outputs such as retained accessory power (RAP),
vehicle speed sensor (VSS), illumination, reverse trigger and parking brake.

Important Notes

1. 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 below for setting chart).
2. 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
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.
PLEASE NOTE: Due to the many different possible OEM SWC configurations, some applications may need to be reprogrammed for
the SWC assignments to make sense.
3. RSC buttons that are identical to the SWC will mimic the SWC one for one.
4. To prevent over driven audio when installing into a vehicle with a Bose system and the aftermarket radio does not have low level outputs
then an LOC (part # SNI-35 or OEM-2) is recommended to match the input voltage or you can create an audio attenuation circuit (see diagram
2 below for audio attenuation wiring).
5. To prevent ground loop or engine noise when installing aftermarket radios that use a common ground on the outer shield of the low level
outputs will require a ground loop isolator (part # SNI-1)
6. The LED will flash whenever a SWC button is pressed.

Wiring Connection Chart

Interface Connector
Red / White Parking Brake
Output (-)
Purple / White Vehicle Speed
Blue / White Amp Turn On Input
Red Accessory Output
Orange / White Illumination Output
Green Reverse Output (+)

Illustration / Schematic

®
Aftermarket
Radio
Connections
Cut for Non-Bose systems
or utilize short press long press dual command functionality
Vehicle Connector
Yellow
Black
White
Output
White / Black
Grey
Grey / Black
Green
(+)
Green / Black
Purple
Purple / Black
Wiring
Vehicle
Connections
Radio Replacement & Steering Wheel Control Interface
. The SWC can always be restored to default
Battery +12v
Blue/Yellow
Ground
3.5mm Jack
Front L + input
Front L - input
Front R + input
Front R - input
Rear L + input
Rear L - input
x4
Rear R + input
Rear R - input
SWC Connection
Programming
Button
Acc On/
Programming
LED
RP4-GM11
for General Motors Vehicles
SWC Connector
Kenwood, Newer
JVC
Alpine, JVC,
Clarion, Fusion,
Pioneer, Sony,
Boyo, Dual,
Lightning Audio,
Visteon or Advent
SWC Connection
See above chart for
different radio type
connections