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PAC RP4.2-HY12A Wiring Interface

Connect a new car stereo and retain steering wheel controls, factory amplifier, and backup cam in select 2012-up Hyundai Veloster vehicles

Item # 541RP4H12A

Installing a new car stereo can often mean losing handy factory features in your vehicle.

Find what Fits your car

Installing a new car stereo can often mean losing handy factory features in your vehicle.

Item # 541RP4H12A

Ships free

Temporarily out of stock

Ship date unknown

$149.99

About the PAC RP4.2-HY12A Wiring Interface

Upgrade the radio in your Hyundai Veloster

Installing a new car stereo can often mean losing handy factory features in your vehicle. PAC's RP4.2-HY12 wiring interface solves this problem, allowing you to install a new receiver in your Veloster while retaining your steering wheel audio controls, aux in, USB port, and backup cam. The interface also supplies the connections you need to install a navigation receiver. 

Upgrade the radio in your Hyundai Veloster

Installing a new car stereo can often mean losing handy factory features in your vehicle. PAC's RP4.2-HY12 wiring interface solves this problem, allowing you to install a new receiver in your Veloster while retaining your steering wheel audio controls, aux in, USB port, and backup cam. The interface also supplies the connections you need to install a navigation receiver. 

DAC converter included

The package also includes PAC's RPA-SPDIF module, which converts the analog audio signal from an aftermarket radio to a digital signal that's compatible with your Hyundai's amp. The module's premium Wolfson digital-to-analog (DAC) converter ensures high-quality sound reproduction. An adjustable gain control lets you match your new car stereo's signal to the Hyundai amp, while power and clipping LEDs allow you to monitor the module's performance. PAC's RadioPro PC application enables you to make fader adjustments from your front to rear speakers. 

Important Notes: If your Veloster has auto climate controls, you will lose visual confirmation of fan mode, fan speed, auto status, and temperature display. The retained USB port will not work with Apple CarPlay or Android Auto. This wiring interface retains steering wheel controls with car stereos made by Alpine, JVC, Kenwood, Clarion, Pioneer, Sony, Fusion, Advent, Boyo, Dual, Lightning Audio, Rockford Fosgate, and Visteon.

READ LESS

Product highlights:

  • retains steering wheel audio controls
  • retains aux input, backup cam, and USB port
  • supplies connections for navigation receiver
  • retains Hyundai amp and subwoofer
    • included RPA-SPDIF module converts analog signal from aftermarket radio to digital signal for factory amplifier
    • Wolfson DAC offers high-quality audio signal
    • adjustable gain control
    • power and clipping LEDs monitor performance
  • does not retain Blue Link
  • Windows laptop required for programming
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # RP4.2-HY12A

What's in the box:

  • Radio replacement/SWC interface module (for Hyundai)
  • Wiring harness (RP4.2-HY12-HAR)
  • USB harness
  • Amplifier retention module (RPA-SPDIF)
  • Amplifier retention harness
  • Instructions

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More details on the PAC RP4.2-HY12A Wiring Interface

Stacey B.

Product Research

Features

Vehicle Compatibility: The PAC RadioPro4 RP4.2-HY12A allows you to replace the factory radio with an aftermarket head unit, while retaining a variety of factory equipped features in select 2012-2016 Hyundai Veloster.

Make Model Year
Hyundai Veloster 2012-2016

Vehicle Notes:

  • In vehicles equipped with auto climate controls, you will lose the fan mode, fan speed, auto status, and temperature display. These functions will still work, however you will have no visual confirmations of the settings.
  • Does not retain Blue Link

Retained Factory Amplifier: The PAC RadioPro4 RP4.2-HY12A retains your vehicle's factory amplifier and subwoofer via the included amplifier retention module. Fader capability can be retained via a PC application. 

Built-In Pre-Programmed SWC: The interface comes pre-programmed for all of the vehicle's factory SWC functions and does not require programming, unless you wish to re-assign the SWC functions to different buttons. The SWC functions can be easily programmed (see owner's manual). The interface retains programming even if your vehicle's battery is disconnected. The SWC harness contains a Blue/Yellow wire and a 3.5mm connector. You will only use one of the connectors, based on your type of aftermarket radio.

  • Blue/Yellow Wire: The Blue/Yellow wire supports Kenwood, newer JVC, and Blaupunkt aftermarket head units.
  • 3.5mm Jack: The 3.5mm jack supports Alpine, Jensen, Older JVC, Clarion, Pioneer, Sony, and Dual radios.
Note: Not compatible with Soundstream head units.

Retains Factory Aux Input: The PAC RadioPro4 RP4.2-HY12A features a set of stereo RCA jacks which plug into your aftermarket head unit's rear-panel Aux input in order to retain your vehicle's factory auxiliary input. A RCA-to-3.5mm adapter (sold separately) may be required depending on your aftermarket radio's aux input connection.

Factory Retained USB Port: The RadioPro4 RP4.2-HY12A will retain your vehicle's factory USB port using the included USB harness which plugs into your aftermarket head unit's rear-panel USB input.  The retained factory USB port is not compatible with Apple CarPlay or Android Auto.

Factory Backup Camera Retention: The interface also retains your vehicle's factory back-up camera through its composite video jack that plugs into the camera input on the back of your new aftermarket stereo.

10A Accessory Output: There is no 12-volt accessory wire in the factory harness, so PAC's RP4.2-HY12A provides a data controlled 12V/10A switched accessory output (red wire). This prevents you from having to run an accessory wire to the fuse box or underneath the steering column when installing an aftermarket radio.

Navigation Outputs: The PAC radio replacement interface also provides a VSS (vehicle speed sense), Parking Brake, and a Reverse Gear output to make installing an aftermarket navigation head unit simpler and less time consuming.

Programmable 12V Output: The red/white wire on the interface can be programmed via the RadioPRO app to do a pulsed or latched 12v output which can then be assigned to any of the vehicle's factory SWC buttons. When assigned, the factory SWC button will activate the pulsed or latched output to control external accessories.

Wiring Connection Chart: The included wiring harnesses features the following hardwire connections.

13-Pin Connector
Yellow +12 Volt Constant
Black Ground
White Male RCA Left Aux
Red Male RCA Right Aux
Black Ground
12-Pin Connector
Blue Power Antenna
White Left Front Speaker +
White/Black Left Front Speaker -
Gray Right Front Speaker +
Gray/Black Right Front Speaker -
Green Left Rear Speaker +
Green/Black Left Rear Speaker -
Violet Right Rear Speaker +
Violet/Black Right Rear Speaker -
20-Pin Connector
Blue/White Amp Turn-On
Orange/White Illumination
Light Green Parking Brake Detection (-)
Pink VSS Output
Violet/White Reverse Output (+)
Red/White +12V Programmable Output
White/Black HS-CAN Input (-)
White/Red HS-CAN Input (+)
Male 3.5mm Jack SWC Output
Blue/Yellow SWC Output
4-Pin Connector
Red +12V Accessory Output (10A)
5-Pin Connector
Yellow Male RCA Composite Video (Backup Camera)

RadioPRO App: PAC offers a Windows compatible RadioPRO App software program to help you configure the interface. Use of the RadioPRO App allows you to do the following.

  • Red/White wire output behavior
  • Aftermarket radio Parking Brake Sequencing
  • Update Product Firmware
  • Read Firmware/Hardware Versions
  • Access Product User Manuals
Note: The interface must be connected to the vehicle and your Windows laptop when using the RadioPRO App.

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