PAC RP4-GM41 Manual

Introduction & Features
The RP4-GM41 interface allows the replacement of a factory radio in select General Motors vehicles with 29-bit LAN
v2 44-pin connector radios. Using this interface will retain factory features such as steering wheel controls (SWC) &
Warning Chimes 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-GM41 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. Once the radio has been removed, the vehicle settings which are normally selected through the factory radio can be accessed by downloading
and installing the PAC Vehicle Settings program. Please make your vehicle settings selections before removing the factory radio for
optimal installation time.
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 below 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. The LED will flash whenever a SWC button is pressed.
5. BAADIN22 antenna adapter sold separately

Wiring Connection Chart

Interface Connector
Red / White Parking Brake
Output (-)
Purple / White Vehicle Speed
Blue Not Used
Blue / White Not Used
Accessory Output
Red
Orange / White Illumination Output
Green Reverse Output (+)
Illustration / Schematic
Vehicle Connector
See above chart for
wire color description.
Interface Connector
See above chart for
wire color descriptions.
Pacific Accessory Corporation
Vehicle Connector
Yellow
Black
Blue/White
Output
White
White / Black
Grey
Grey / Black
(1 amp)
Green
Green / Black
(+)
Purple
Purple / Black
Red/White RCA
Wiring
Pacific Accessory Corporation
Radio Replacement & Steering Wheel Control Interface
Battery +12v
Ground
Not Used
Front L + input
Front L - input
Front R + input
Front R - input
Rear L + input
Rear L - input
Rear R + input
Rear R - input
x4
Factory AUX Jack
SWC Connection
Programming
Button
Acc On/
Programming
LED
RP4-GM41
for General Motors Vehicles
SWC Connector
Blue/Yellow Kenwood, Newer
JVC, OEM or
Blaupunkt
3.5mm Jack Alpine, JVC,
Clarion, Fusion,
Pioneer, Sony,
Valor, Boyo, Dual,
Lightning Audio,
Visteon or Advent
SWC Connection
See above chart for
different radio type
connections
Rev. 012115
Page 1