RP4-GM11
Radio Replacement & Steering Wheel Control Interface
for General Motors Vehicles
Installation Steps
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.
2. Make all connections as described in the chart on page 1.
If there is a Bose® Audio system present:
Connect the RCA inputs to the
aftermarket radios pre-amp output. The audio level will vary depending on the new radios pre-amp output voltage (2-4 volts is recommended).
If there is not a Bose® Audio system present:
Cut the RCA inputs off and connect the aftermarket radios speaker outputs to the remaining
wire according to the chart on page 1.
3. Connect the SWC wire according to the chart on page 1 (aftermarket radio MUST support a wired remote input)
.
4. If you wish to reassign functions to the SWC follow the programming instructions in the next section.
IMPORTANT!
The interface comes pre-programmed for the functions listed in the chart below and does not require programming unless you
wish to re-assign the SWC functions to different buttons. The SWC can always be restored to default settings by pressing the program button
on the side of the interface once and waiting for the timeout.
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.
Alpine
JVC
Kenwood
Clarion
Pioneer
Sony
Fusion
Volume -
Volume -
Volume -
Volume -
Volume -
Volume -
Volume -
Volume -
Source Up
Source
Source
Disc/FM+
Source
Source
Source
Source
Source Down
Band
Disc/AM
N/P
Band
Band
Off
Seek Up
Track +
Track +
Track +
Track +
Track +
Track +
Seek Down
Track -
Track -
Track -
Search -
Track -
Track -
Track -
Voice
Mute
Mute
Mute
Mute
Mute
Mute
Mute
Prog
Preset Up
Preset -
Source
Band
Audio
Optional Steering Wheel Control Programming
Default SWC Button Assignments (Trucks & SUVs)
Alpine
JVC
Kenwood
Clarion
Pioneer
Sony
Fusion
Volume -
Volume -
Volume -
Volume -
Volume -
Volume -
Volume -
Volume -
Seek Up
Track +
Track +
Track +
Track +
Track +
Track +
Seek Down
Track -
Track -
Track -
Search -
Track -
Track -
Track -
Voice
Mute
Mute
Mute
Mute
Mute
Mute
Mute
End
Source
Source
Source
Source
Source
Source
Source
Default SWC Button Assignments (Corvette)
Default Steering Wheel Control Programming
If you wish to re-assign the SWC functions or utilize short press long press dual command functionality, the interface must be
programmed in the specific order shown on the chart below. If you come across a function in the chart that your steering wheel
does not have, or you do not want to program, press and release the programming button on the side of the interface to skip that
function. The LED will flash off and on confirming that you have successfully skipped that function and are ready to proceed to
the next one.
Short Press Long Press Dual Command Functionality
This feature allows you to assign two aftermarket radio functions to each of the vehicles SWC buttons. It can be used with as
many of the buttons as the user likes or none at all. When this functionality is implemented, quickly pressing and releasing a SWC
button will initiate the short press command while pressing and holding a SWC button for longer than two seconds will initiate the
long press command. Please note that no long press commands are programmed by default. If you wish to assign dual command
functionality to the SWC please follow the programming steps on the next page.
1
2 3 4 5
6
78
9
0
Alpine
JVC
Kenwood
Clarion
Pioneer/Other
Sony
Fusion
1
2
3
4
7
8
9
Other =
Advent, BOYO, Dual, Lightning Audio, Rockford Fosgate, Visteon
SET RADIO SELECT SWITCH