Manuals+

SR-TUN14HX Stinger HORIZON10® Radio Replacement Kit

for 2014-2021 Toyota Tundra

Introduction and Features

The SR-TUN14HX is a complete radio replacement kit for the installation of the Stinger HORIZON10® modular radio in Toyota Tundra vehicles. All necessary modules, cables, and adapters are included to retain important features of the factory system. These features include: steering wheel-mounted radio controls, factory amplifier, factory reverse camera, factory USB port, and AM/FM reception. The kit utilizes Plug & Play wiring harnesses for quick and easy installation without the need to cut or splice any wiring. The display mounting panel allows for the mounting of the 10-inch display without modifying or cutting any part of the vehicle's sub-dash.

Important Notes

It is recommended to read this manual thoroughly to familiarize yourself with the entire installation process prior to beginning.

  1. Adjustment of vehicle settings through the original radio's vehicle settings menu will be disabled after installation of the new radio. Ensure all settings are as desired before removing the original radio.
  2. The RP4.2-TY11 interface does not retain Rear Seat Entertainment.
  3. To retain SiriusXM Radio functionality, a SXV300 Tuner is required and sold separately.
  4. If no audio is heard after installation, cycling the ignition may be necessary to initialize the factory amplifier.
  5. Speaker fading on factory amplified systems is only supported with the "amplified output" connection of the RP4.2-TY11.
  6. When using real-time fade, if the fader setting is biased towards the front or rear, the sound may initially play at the default setting and then quickly transition to your custom setting as the radio turns on.
  7. Radio features such as High Pass Filters (crossovers) can interfere with proper fader function. For the RP4.2-TY11's fader function to work correctly, the audio from the radio's output must match, allowing it to compare front and rear audio levels and determine the proper fader setting for the factory amplifier.
  8. If the truck is equipped with a factory 360° camera system, changing camera views via the touch screen will no longer be available. Camera views can only be changed using the steering wheel controls.

Recommended Tools

Included Components

The following components are included in the SR-TUN14HX kit:

  1. LH Side Bracket (TUN14H_LH)
  2. HORIZON10 Display Main Frame
  3. RH Side Bracket (TUN14H_RH)
  4. Module Bracket (H_MODULE_BRKT)
  5. Differential Video Adapter (RPA-VA1)
  6. Radio Interface (RP4.2-TY11)
  7. Main Harness 3 Plug (SR-TAC19H-HAR)
  8. Main Harness 4 Plug (SR-TAC16H-HAR)
  9. Main Harness Adapter (SR-SRK-ADAPT-IX210)
  10. Satellite Radio Antenna Adapter (SAT-02)
  11. USB Adapter (USBC-TY3)
  12. USB Adapter (USBC-TY1)
  13. AM/FM Antenna Adapter (BAA44)
  14. GPS Antenna Adapter (GPS-TY01)
  15. Mounting Hardware: 8pcs - #10 x 3/8" Truss Head Phillips Screws

Note: In addition to the SR-TUN14HX components, additional hardware and wire harnesses from the HORIZON10 (IX210) kit will also be used during installation. Refer to the IX210 Installation Guide for detailed harness and hardware descriptions.

The diagram shows the included components numbered 1 through 15. Component 1 (LH Side Bracket) and 3 (RH Side Bracket) are L-shaped brackets. Component 2 (HORIZON10 Display Main Frame) is a large black frame. Component 4 (Module Bracket) is a smaller bracket. Components 5 through 14 are various adapters and harnesses, including interface modules, antenna adapters, and USB adapters. Component 15 indicates the mounting hardware.

Wiring Overview

The wiring diagram illustrates connections between the vehicle's factory connectors (labeled SR-TAC19H-HAR and SR-TAC16H-HAR) and the Stinger interface modules. Key connections include OEM Camera, AUX Audio, Reverse Cam In, GPS, SXM, USB, and AM/FM Antenna. The diagram shows how the RP4.2-TY11 interface connects to the main harnesses and then to the Stinger radio unit. It also indicates the connection for the optional SXV300 Satellite Radio Tuner (sold separately). The diagram uses color-coding for 'Main Harness Connection' (black) and 'Stinger Connection' (red). It notes that connections shown are required for full functionality, and additional connections may be needed for extra components.

Installation Manual

This installation manual covers the necessary procedures to complete the installation efficiently and avoid redoing steps. The order of procedures is as follows: Disassembly, In-Vehicle Harness Connections, Interface and Main Harness Connections, Side Bracket Assembly, Main Frame Assembly, In-Vehicle Connections, and Radio Unit Installation. The steps shown are required for full radio functionality. Additional components like cameras, amplifiers, or satellite radio may require extra steps and harnesses.

Section 1: Disassembly

Before removing the factory radio, ensure all vehicle settings programmed via the factory radio are set to the desired configuration.

Step 1: Using a plastic trim tool, remove the media/switch panel located below the climate controls.
Step 2: Remove the climate control assembly by pulling outward from the bottom to release the clips.
Step 3: Disconnect the connector on the backside of the climate controls and set the panel aside.
Step 4: Remove the four 10mm bolts located below the factory radio.
Step 5: Remove the factory radio by pulling outward from the bottom, releasing the clips along the top.
Step 6: Disconnect all connectors and cables from the back of the factory radio.

Section 2: In-Vehicle Harness Connections

Step 1: From the SR-TUN14HX kit, locate the correct USB Adapter (USBC-TY1 or USBC-TY3) that matches the factory USB cable in the vehicle.
Step 2: From the SR-TUN14HX kit, locate the GPS Antenna Adapter (GPS-03) and the Satellite Radio Antenna Adapter (SAT-01) if installing an SXM tuner.
Step 3: Connect the identified adapters to the corresponding matching connectors that were removed from the factory radio.

Section 3: Interface and Main Harness Connections

Step 1: Referencing the radio plugs in the vehicle, determine which Main Harness will be used: the SR-TAC16H-HAR (4-Plug) or the SR-TAC19H-HAR (3-Plug).
Step 2: Set dip switch #3 on the side of the Radio Interface (RP4.2-TY11) to the down (ON) position. All other switches should be in the up (OFF) position.
Step 3: Plug the 3-pin (1), 20-pin (2), and 24-pin (3) connectors from the main harness into the appropriate ports on the interface module.
Step 4: Referencing the sticker on the back of the interface, connect the 12-pin connector (4) to the appropriate port. Select the "Amplified" port if the truck has a factory amplifier, or the "Non-Amplified" port for base audio systems.
Step 5: Connect the Radio Harness Adapter (SR-SRK-ADAPT-IX210) to the Main Harness (as prepared in step 1 of this section).
Step 6: Connect the "OEM Camera" RCA on the Main Harness to the "Reverse Cam In" RCA on the HORIZON10's 16-Pin A/V Harness (PSEH-2103).
Step 7: For 2014-2018 Tundra models, connect the pair of RCA connectors labeled "AUX Audio" from the Main Harness (SR-TAC16H-HAR) to the "AUX IN" RCA connectors on the HORIZON10 Harness.
Step 8: From the SR-TUN14HX kit, connect the Differential Video Adapter (RPA-VA1) to the 6-pin plug on the Main Harness.
Step 9: Connect the blue wire on the AM/FM Antenna Adapter (BAA44) to the blue "POWER ANTENNA +" lead on the Main Harness.
Step 10: Attach the Radio Interface (RP4.2-TY11) to the Module Bracket (H_MODULE_BRKT) using the supplied zip ties in four locations.

Section 4: Side Bracket Assembly

Step 1: Align the lower holes of the left hand bracket (TUN14H_LH) to the left side of the HORIZON10 radio module.
Step 2: Attach the left hand bracket to the radio module using two M5 x 10 screws from the HORIZON10 hardware.
Step 3: Align the lower holes of the right hand bracket (TUN14H_RH) to the right side of the HORIZON10 radio module.
Step 4: Attach the right hand bracket to the radio module using two M5 x 12 screws from the HORIZON10 hardware.
Step 5: Position the module bracket between the side brackets. Align to the top holes and secure using four #10 x 3/8" truss head Phillips screws from the SR-TUN14HX hardware.
Step 6: From the main harness, plug in the 26-pin (1), 12-pin (2), and 16-pin (3) plugs into the HORIZON10 Radio Module. Plug in the HORIZON10 14-pin A/V harness (4) and the Antenna Adapter into the Radio Chassis (5).

Section 5: Screen Preparation / Main Frame

Step 1: Place the HORIZON10 Panel Display Mount face down and cut or break off the two tabs marked in red.
Step 2: Place the HORIZON10 Panel Display face down. Connect the LVDS Display Cable, followed by the LVDS Connector Rear Cover.
Step 3: Push the LVDS Connector Rear Cover down until the screw hole opening is visible. Insert the M2.6x6.5 screw to secure the cover.
Step 4: Place the HORIZON10 Touch Panel Display face down and pass the cable through the hole. Then use 4 M4 X12 Screws to secure the display.
Step 5: With the display face down, set the assembled unit and connect the LVDS Cable (shown in the red circle). Note the cable routing.
Step 6A: Align the RH & LH Side Bracket holes to the Display Main Frame mounting holes and secure using four #10x3/8" screws from the SR-TUN14HX hardware.
Step 6B: Refer to notes from Step 6A.
Step 7: Remove the two retaining clips from the factory radio and install them in the same location on the Display Main Frame.

Section 6: In-Vehicle Connections and Radio Unit Installation

Step 1: Connect the three (or four) vehicle side connectors on the Main Harness (from Section 3, Step 1) to the matching vehicle radio plugs.
Step 2: Connect the AM/FM Antenna Adapter (BAA44) to the HORIZON10 AM/FM antenna input (1). Connect the other end to the vehicle's AM/FM antenna (2).
Step 3: Insert the included USB-C / USB-A adapters into the ports on the back of the HORIZION10. Refer to step 4 notes for additional information.
Step 4: Plug in the GPS (3) and USB (4) adapters. Note: The USB-C cable must be plugged into the USB-C port for wired Apple CarPlay and Android Auto functionality. These are the connections for the basic installation. If adding additional components such as a second USB, SXM tuner, or additional cameras, those connections should be made at this point, before mounting the radio module.

Note: If an External Microphone is installed, the setting must be changed from Internal (Default) to External in the Phone Settings: Main Menu > Phone > Settings.

Step 5: Slide the radio assembly into position and align the top retaining clips to the sub-dash.
Step 6: Push to seat the retaining clips. Install one of the 10mm bolts below the radio to temporarily hold it in place.
Step 7: Before reassembling the vehicle, it is recommended to proceed to Testing and Verification on the next page.

Testing and Verification

  1. Turn on the radio and check volume, balance, and fade. If no audio is heard, cycle the ignition to initialize the factory amplifier. If audio is still absent, reset the interface according to the procedure in the next section.
  2. For JBL systems, if the overall volume is too low, use the gain adjustment on the side of the RP4.2 interface to set the desired level. The recommended method is to turn the radio volume to 3/4, then adjust the RP4.2 gain until slight distortion is heard, and then back it down slightly.
  3. Verify that all Steering Wheel Controls (SWC) are functioning properly. If any SWC are not functioning, resetting the interface may be necessary.
  4. Verify that AM/FM Reception, Bluetooth, USB, Apple CarPlay, Android Auto, and Camera(s) are functioning correctly.

Restoring Factory Settings

The RP4.2-TY11 interface can be restored to factory default settings by pressing and holding the programming button on the side of the module until the status LED starts blinking red. Release the button once the LED begins blinking red. The LED will go through two stages (blinking green, then amber) before starting to blink red. This reset will restore the following settings to their factory defaults:

RadioPRO App

Use of the RadioPRO App allows for the following:

Please Note: The interface must be connected to the vehicle when using the following features of the Radio PRO App: Factory Amplifier Settings. The interface does not need to be connected to the vehicle when using the following features: Firmware Updates, Reading firmware/hardware versions.

The screenshot displays the RadioPRO application interface. It shows sections for 'Configure', 'Firmware', 'About', and 'Support'. The 'My RadioPRO' section lists application details and provides sliders for adjusting 'Gain', 'Fade', 'Bal' (Balance), 'Treble', 'Mid', and 'Bass', all defaulting to a middle position (50).
The second screenshot shows a Windows file explorer window titled 'Open' with a file named 'RP4.2-TY11_V37.pufx' selected, indicating a firmware file. The third screenshot shows the RadioPRO app in 'Connected' mode with an 'Update Firmware' button, ready for the update process.

Technical Support

Warranty

LIMITED WARRANTY

The quality controls used to manufacture PAC products are designed to ensure complete satisfaction. This warranty applies only to the original owner of PAC products purchased from an authorized PAC dealer. It covers PAC products that, upon inspection by authorized PAC personnel, are found to have failed in normal use due to defects in material or workmanship. This warranty does not cover installation expenses.

Attempting to service or modify PAC products, or operate them outside their recommended usage will render this WARRANTY VOID.

Unless prescribed by law, PAC is not liable for any personal injury, property damage, and/or incidental or consequential damages (including water damage) resulting from product malfunctions, defects, or misuse. PAC is also not liable for any products that are altered or improperly installed.

WARRANTY PERIOD AND PROCESS

Within the first 12 months from the date of purchase, subject to the conditions above, PAC will repair or replace the product at its sole discretion if it is found to be defective in material or workmanship. The product must be returned to an authorized PAC dealer with PROOF OF PURCHASE.

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