The RPK4-CH4101 is a complete radio replacement kit with integrated climate control retention for the 2013-2019 RAM
trucks equipped with the 8” screen. All modules and cables are included to retain important features of the factory
system including: steering wheel mounted radio controls, factory reverse camera, and AM/FM reception.
A secondary 5.2” LCD screen is added for additional vehicle control including: Climate Controls user interface retention,
vehicle settings retention, factory amplier control, settings for control of the RPK4.2-CH4101 interface, forced camera
activation, ability to add additional cameras, tire pressure and vehicle gauges. Features provided by the LCD screen
will vary based on the vehicle features. See Important Notes (next section) for additional information.
Four hard buttons added to the radio dash bezel (below the 5.2” LCD screen) allow user to set presets to control
functions including: specic climate controls, forced camera activation, LCD screen controls. Options for hard
buttons will vary based on vehicle features and which cameras are installed.
Some advanced features require additional accessories, sold separately.
Important Notes
We recommend reading this manual thoroughly to familiarize yourself with the entire process
prior to beginning the installation.
1. Only compatible in vehicles equipped with the 8” screen.
2. 2019 RAM Trucks: Only compatible with Classic body style.
3. Does Not Retain:
• Cluster Display Features
• Compass
• Clock
• Phone pop-ups
• Navigation pop-ups
4. In trucks equipped with parking sensors you must use the included external speaker in order to continue hearing parking
sensor chimes. If the truck has a factory amplied system and parking sensors, the speaker is not necessary unless the
factory amplier is no longer being used.
5. If you are adding additional cameras, or the truck has additional factory cameras beyond reverse cam, PAC part
number RPA-16P5V (sold separately) must be used to connect up to 5 total cameras.
1. Set the DIP Switches on the side of the interface according to the chart on page
Fig.1: Rear of RPK4-CH4101 Radio
Dash Bezel
10.
2. Wire the aftermarket radio harness according to the wiring connection charts for
Interface Connector 1 and Interface Connector 4 provided on page 10.
3. Connect Interface Connectors 1, 2 and 4 to the RP4.2-CH4101.
4. Connect Interface Connector 3 to either the amplied or non-amplied audio
output connector depending on your scenario.
5. Connect one end of the supplied LCD Display connector into the Expansion Port
on the RP4.2-CH4101 and run the other end to be accessible when re-installing
the factory dash panel.
6. If you are installing this kit into a truck with factory parking sensors and it IS NOT
equipped with a factory amplier, or if the factory amplier is being bypassed,
connect the supplied external chime speaker to the external speaker output on
interface connector 3. Mount in a place free of obstructions so that the parking
sensor chimes can be heard.
7. Connect the SWC output wire to the aftermarket radio (aftermarket radio must
support a wired remote input).
8. Once all connections have been made, plug the vehicle connectors into the
vehicle harness.
9. Reverse camera connection (see Fig. 2):
ConnectorConnector Function
1
2Expansion Port (Not Currently Used)
3Camera Input / Output
4Climate Control Display USB
RP4.2-CH4101 Display Connector
Update Port
a. Connect the included RPA-16P1V harness to the 16-pin connector
(Connector 3) on the back of the radio dash bezel (see Fig.1).
b. Connect the Male Yellow RCA (Video Output) from the RPA-16P1V harness to the aftermarket radio’s reverse camera
input.
Fig.2: RPA-16P1V Harness
c. Connect the Female Yellow RCA (Video Input) from the RPA-16P1V harness to the Male Yellow RCA from vehicle connector
1 (factory reverse camera), or to the aftermarket reverse camera’s RCA video output.
d. Connect the red and black power wires from the RPA-16P1V to the aftermarket reverse camera’s power wires. If you are
utilizing a factory camera, simply insulate these wires.
e. To Add Additional Cameras (Front, Blind Spot, Cargo, etc.): use the RPA-16P5V (sold separately) in place of the
included RPA-16P1V harness. See the next page for additional information.
10. Now it’s time to re-install the factory dash panel into the truck. Connect the factory plugs from the vehicle into the appropriate
connectors on the back of the dash panel
.
11. Connect the free end of the LCD Display connector into the outermost 10-pin connector (Connector 1) on the back of the
radio dash bezel (see Fig.1).
12. If you are retaining or installing cameras, connect the RPA-16Pxx harness into Connector 3 on the back of the radio dash
bezel (see Fig. 1).
13. OPTIONAL: To update rmware with minimal eort and without accessing the back of the Climate Control display, a USB
extension cable, PAC part USBDMA3 (sold separately), can be connected into the USB port (Connector 4) on the back of the
radio dash bezel (see Fig.1) and run to a location that allows for easy access (glove box, tucked under an interior panel, etc.).
14. Once the dash bezel has been connected, the LEDs for the illumination of the four hard buttons on the kit (below the dash
bezel LCD display) will illuminate momentarily, then start ashing. This indicates the system is initializing. Next, the LEDs will
turn o, then the RadioPRO splash screen will appear on the LCD. The initialization sequence can take up to 2 minutes on initial powerup. Once the LCD screen comes on, you can proceed to the setup and testing section on the next page.
With the addition of the optional RPA-16P5V harness, the
RPK4-CH4101 supports display and control of up to 5
cameras. The RPA-16P5V replaces the RPA-16P1V camera
harness that is included with the RPK4-CH4101.
Cameras can be connected to any of the 4 separate camera
inputs (camera 1 is reserved for the reverse camera). Camera
input and control is adjustable through the settings menu on
the LCD display on the dash bezel. The provided power and
ground connections are active when the vehicle is on. Use
these leads to power your aftermarket camera(s) (up to 800mA
total). If the cameras require more than 800mA, please use an
external relay. See page 13 for setup and operation.
Setup and Testing
Verify that all screens and functions are present through the 5.2” display
Options ScreenClimate Control* Camera Control
Complete Radio Replacement with
Integrated Climate Control Retention for Select
2013-2019 RAM Trucks
*Dual Zone Climate shown, exact
appearance may vary based on vehicle.
Information ScreenVehicle Gauges 1
Vehicle Gauges 2
Enter the Installation Settings menu by pressing and holding the Vehicle Settings icon on the Options screen.
• Auto Turn On Into Drive - the front camera will come
on when the vehicle is placed into drive and stay on
for 30 seconds or until the congured speed threshold
is reached.
• Steering Wheel Angle Mode - The front camera will
turn on when the steering wheel is greater than the
selected angle and the speed is less than the selected
speed threshold.
• Speed Threshold - The front camera will come on
when the vehicle is less than the speed selected here
and greater than the SW Angle speed threshold.
• Steering Wheel Angle Threshold - The front camera
will come on when the steering wheel angle is equal to
or greater than what is selected here and less than the
selected speed threshold.
The selectable triggers for the Left and Right camera are:
Operation
• O - Camera will not come on with turn signals (only
with forced activation through icons on LCD display).
• On - Camera will come on with turn signal at any time.
• Double Tap - Camera will come on with a double tap
on the turn signal at selected speed (select speed
trigger).
• Moving Over X MPH - Camera will come on with turn
signal when truck is moving faster than the selected
MPH.
Speed Trigger
• Above 10 MPH
• Above 20 MPH
• Above 30 MPH
• Above 40 MPH
• Auto Turn On Into Drive Max Time - This sets
the max amount of time the front camera will be
displayed when the vehicle is put into drive. If the
speed threshold is met before this time ends, the front
camera will turn o then.
Steering Wheel Controls
IMPORTANT! The interface comes pre-programmed with all 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. See below for information on custom programming the steering
wheel controls, including adding long press / short press operation.
Example: To program the Track Up button to perform the Track Up function with a quick press, and perform the Preset Up
function when the button is pressed and held for more than 1 second, from the SWI settings menu, do the following:
• Each SWC radio function can be used only once. If you try
to use a radio function that is already assigned to a button,
the pre-existing button's radio function will change to "Not
Assigned", and the radio function will be set to the new
button. For example, if you were to try to program Volume
Up to the Mode button, the Volume Up button would now
be set to "Not Assigned" and the Mode button would be set
to Volume Up.
Audio Adjustments
If your truck has a factory amplier or parking sensors the 5.2” display has the ability to adjust the factory amplier’s audio
settings or the parking sensor chime volume.
Amplier Audio Settings
Step 1
Open Factory Amplier Settings
Step 2
Make Adjustments
Chime Volume Adjustment
Step 1- Factory Amplied
Open Advanced Settings
Real Time Fade On = Fading from aftermarket radio
Real Time Fade O = Fading from this menu only
The four hard buttons located below the RPK4-CH4101
display, give you the ability to assign a single preset to each
button to control a specic Climate Control function, force
activate a specic camera to display on the radio, or to
control select screen settings. Once the buttons have been
assigned a function, a descriptive tag above each button
showing what function that button performs will be present
(this function can be toggled on / o).
If popups are turned on in the menu: The proximity sensor within the dash bezel will display the descriptive tabs when your
hand is near the buttons. When your hand is removed, the tabs will disappear.
The options that are able to be preset to the hard buttons are:
Complete Radio Replacement with
Climate Control
Functions*
• Max A/C
• Sync
• Heated Wheel
• Fan Mode
* Climate Control Functions will vary for Single Zone and Dual Zone applications.
** The number of available cameras will vary based on how many cameras are installed and activated.
To test the functionality of the radio and RPK4-CH4101, start with the ignition o and driver’s door open, then do the following:
1. Turn the ignition on. The LED on the interface will turn on and the +12v accessory wire will turn on.
2. Turn on the radio and check volume, balance and fade.
• If the overall volume is excessively low or high: Verify that Interface Connector 3 is connected to the appropriate
output connector on the RP4.2-CH4101 module (one is for amplied audio systems, the other for non-amplied audio
systems).
• If the overall volume is slightly lower or higher (trucks with a factory amplier only): use the factory amp gain
adjustment through the RPK4-CH4101 settings menu to set it to the desired level. See next page for information on
how to access the settings menu.
• Verify that all SWC are functioning properly. See the Steering Wheel Control section (page 15-16) for radio specic
details.
3. Verify that all vehicle functions are present through the RPK4-CH4101 5.2” LCD display:
• Climate Controls
• Sound Settings (Only applicable in vehicles with a Factory Amplier)
• SWI Settings (If DIP Switches are set for any radio other than 2-Wire Resistive)
• Vehicle Settings
• Information Screen
• Vehicle Gauges
• Camera Control
4. If a vehicle function is not present: Reset the RP4.2-CH4101 (see page 19). If a vehicle function is not present after
a reset: With the vehicle running, disconnect and reconnect the RP4.2-CH4101 Display Connector from the back of the
5.2” LCD display then reconnect it.
Complete Radio Replacement with
Troubleshooting
1. Truck has dual zone Climate Controls but screen is displaying single zone - With the vehicle running, disconnect and
reconnect the RP4.2-CH4101 Display Connector from the back of the 5.2” LCD display.
2. On initial install, Climate Control fan speed is low fan speed and unresponsive - The truck needs to be sleep cycled.
Turn the truck o, close all doors, lock the truck with the keyfob and let is sit for 5 minutes. After 5 minutes start the truck
and check the Climate Control functionality again.
3. If a vehicle function is not present: Reset the RP4.2-CH4101 (see page 19). If a vehicle function is not present after a reset: With the vehicle running, disconnect and reconnect the RP4.2-CH4101 Display Connector from the back of
the 5.2” LCD display then reconnect it.
4. Steering wheel controls inoperable - Verify that the DIP switches are set properly according to page 10 of this manual.
5. Reverse Camera inoperable -Verify that all reverse camera connection points are proper by reviewing the reverse camera
wiring connection steps on page 11 and 12.
LED PatternStateAction
LED 2 solid redVehicle RAP / ACC output is onN / A
LED 2 ashing greenSWC ActivityN / A
LED 2 ashing redModule Resetting / InitializingN / A
LED 1 solid greenModule Powered and OperatingN / A
The RadioPRO app will allow you to update the RP4.2-CH4101 interface with new rmware as it becomes available. Please
visit www.PAC-audio.com/rmware for available updates.
The 5.2” LCD screen’s rmware can also be updated. Refer to the RPK4.2-CH4101 User Manual for additional information.
To update the rmware, open the Radio PRO PC app, connect the interface to your PC and select ”Firmware”, then “Update
Firmware”. Now select “Select File”. Finally, browse to the place where you saved the le and select it. This will begin the
updating process. Once nished, disconnect the interface from the PC and test operation.
Complete Radio Replacement with
Reset / Restoring Interface Factory Settings
You can restore the interface to factory default settings by pressing and holding the programming button on the side of the
module until the status LED starts blinking red. Once the LED starts blinking red, release the button. You must release the
button while the LED is blinking red in order to perform the reset. This reset will restore all settings to factory default.