RP4.2-HY12
Radio Replacement &
Steering Wheel Control Interface
for Hyundai Veloster
Rev. 101515
Page 1
Introduction & Features
Important Notes
The RP4.2-HY12 interface allows the replacement of a factory radio in the Hyundai Veloster. Using this interface will
retain factory features such as: steering wheel controls (SWC), secondary screens, reverse camera and factory SPDIF
audio amplier (seperate part required, part # RPA-SPDIF) whenever 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 RP4.2-HY12 also provides data bus driven outputs such as vehicle speed sense (VSS), illumination,
reverse trigger and parking brake.
1. Does not retain Blue Link. You must use the RP5.2-HY12 to retain Blue Link.
2. The AUX connection in the RP4 harness will only provide sound if the aftermarket radio has a USB port. This is because the
USB port provides the power to make the factory USB/AUX port work. If you have connected the USB plug to your aftermarket
radio and it is still inoperable, this means that the aftermarket radio’s USB port is not supplying enough current.
3. When using the RPA-SPDIF in factory amplied vehicles, you can adjust factory amplier settings such as Bass, Mid, Treble,
Fader, Balance and Gain with the RadioPRO app found at www.pac-audio.com. Please refer to page 6 for detailed instructions
on the app and the functionality of this wire.
4. In vehicles equipped with auto climate controls, you will lose the fan mode, fan speed, auto status and temperature display.
Wiring Connection Chart
3.5mm Jack SWC Output
Pink MS-CAN + Input
Pink/Black MS-CAN - Input
Blue/Yellow SWC Output
Red/White 12v+ Programmable
Output (1 amp)
Orange/White Illumination Output
Pink Vehicle Speed
Sense Output
Violet/White Reverse Output
White/Black HS-CAN + Input
White/Red HS-CAN - Input
White Analog SWC
Orange/Black Illumination Input
Light Green Parking Brake
Output (-)
Blue/White Amp Turn On Input
Interface Connector 2
Yellow Battery +12v
Black Ground
Blue Power Antenna
Turn On Input
White Front L + input
White / Black Front L - input
Grey Front R + input
Grey / Black Front R - input
Green Rear L + input
Green / Black Rear L - input
Purple Rear R + input
Purple / Black Rear R - input
Yellow RCA Factory Reverse
Camera Video (if
equipped)
Vehicle ConnectorInterface Connector 1
Red Accessory Output
(10 amp)
Yellow 12v+
Black Ground
Red Accessory Output
