Introduction of Pac SWI-RC Steering Wheel Control Interface

The pac SWI-RC Steering Wheel Control Interface is an innovative product designed to provide seamless integration between your car's steering wheel controls and your smartphone. This device is perfect for drivers who want to stay connected while keeping their hands on the wheel and eyes on the road. The estimated price for this product is around $70, and it is now available for purchase.

Detailed Specifications

The pac SWI-RC Steering Wheel Control Interface boasts several key features that make it a must-have for any driver. These features include universal compatibility with most vehicles, plug-and-play installation, voice control integration, and compatibility with a wide range of smartphones. Additionally, the device is compact and easy to use, making it a convenient addition to any car.

Pac General Overview and Radio Connection

Set Radio Select Switch

Set the radio select switch on the side of the SWI-RC.

Other = Advent, BOYO, Dual, Jensen, Lightning Audio, Rockford Fosgate, Visteon

Alpine	Blaupunkt	Clarion/ Nakamichi	Fusion	JVC	Kenwood	OEM	Pioneer/Sony/ Other*	Valor
1	8	4	9	2	3	6	7	5

Wiring Information

PLEASE NOTE: Using T-Taps is NOT recommended. It is VERY important that ALL connections be solid & secure. Soldering or crimp connections are best and will provide reliable operation.
Please visit: www.pac-audio.com/swi or reference the included V.I.I.G. for detailed instructions and wiring information for your vehicle.

Wire Color	Description	Wire Color	Description
Black	Ground	Green	Analog 4 Input
Red	Accessory 12v	Blue	HVACData Output
White	Analog 1 Input	Orange	Serial Data1 Input
White/Black	Analog2 Input (560Ohm Resistor inline)	Yellow	SerialData 2 Input
White/Red	Analog 3 Input (150Ohm Resistor inline)

Connect the interface control input wire (white, white/red, white/black, yellow, orange or green) to the vehicle as indicated in your specific instructions.
Connect the BLACK wire to ground (-). For best results use the same ground as the aftermarket radio.
Connect the RED wire to switched +12V. This wire should show +12V when the ignition key is turned to the ACC or ON positions.
Cut the necessary loop (Purple or brown) if instructed to do so, in your vehicle specific instructions, or in the printed Vehicle Install Information Guide (V.I.I.G.)
Add the proper resistor(s), if instructed to do so, in your vehicle specific instructions.

Note: some applications, such as Nissan and Harley Davidson, require multiple resistors. We include a pack of resistors with this product for this purpose. These resistors' colors and values are explained at the bottom of the Troubleshooting section of this manual. Resistor information can also be found in the "Notes; and install details" column of the V.I.I.G.
Wire resistors according to the "FIG#" diagrams are found in the V.C.C.

Radio Connection

PLEASE NOTE: SWC input may not be located on the radio's chassis.

3.5mm (1/8") plug - Commonly found on chassis of aftermarket radio
Wired connection (Blue/Yellow) - For select Kenwood and JVC radios

Blaupunkt radios with optional wired remote inputs are supported by the SWI-RC, however we do not supply any connectors or support for Blaupunkt. It is up to the consumer or installer to supply this connector. Use Vehicle Connector Chart and use VW connector as referenced. Connect the SWI-RC's blue/yellow wire to pin #11 of VW connector. The connector you obtain may come with two or three pieces, however the connector (usually green) should show pin #11 on it.

Programming The Interface

NOTE about programming: The SWI-RC can be configured for your specific vehicle automatically using the PP-SWI programmer (sold separately). This option does not require any manual mapping of the SWC button functions. The PP-SWI connects to the port located under the removable panel on the top of the interface (see illustration on first page).
If you are not using the PP-SWI to automatically configure the SWI-RC, please follow these steps to manually map the SWC button functions for your vehicle and radio.

Programming The Vehicle Version

Press and hold programming button on the side of the SWI-RC, and turn the vehicle ignition to the ON position while still holding the button. The LED on the SWI-RC will turn on. Release the programming button and the LED will turn off.
Press and release the programming button the same number of times as the desired vehicle version number. The LED will flash each time the button is pressed and released.
Wait 3 seconds, the LED will flash the same amount of times as the set vehicle version number.
Turn vehicle ignition to OFF position. Programming the Vehicle Version Number is complete.

NOTE: If you inadvertently program the wrong version number, simply start again at step #1.

Mapping SWC Button Functions

PLEASE NOTE: If you programmed the SWI-RC for version 4, refer to the section below for the mapping order of the HVAC controls. These must be mapped BEFORE the other commands listed in the Radio Function Mapping Order chart, below.
The steering wheel control button functions must be mapped in the specific order shown in 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 map, press the Programming Button on the side of the SWI-RC. The LED will flash twice and then stay on confirming that you have successfully skipped that function and are ready to map the next button function.

Start the vehicle. The LED will flash to indicate the set vehicle version number.
Press and release programming button on SWI-RC. LED will turn on.
Within 7 seconds, press and hold for 5 seconds, the first SWC button to be mapped (volume +). The LED will turn off during this process.
PLEASE NOTE: If using in conjunction with the OS-4, OS-5 or MS-FRD1 the Source, Media or Speak buttons cannot be held for more than 1.5 seconds.
Release the button. The LED will turn on back on.
Repeat steps 3 & 4 for each additional audio function you wish to map to the steering wheel (within 7 seconds).
Once you have mapped all the desired button functions, wait 7 seconds. The LED will flash three times indicating end of mapping. The LED will flash to indicate the set vehicle version number.
Test the interface for proper functionality. Whenever an SWC button is pressed the LED on the interface should blink.

Radio Function Mapping Order

Radio	Alpine	JVC	Kenwood	Clarion	Other	Sony	Pioneer	Fusion
1	Volume +	Volume +	Volume +	Volume +	Volume +	Volume +	Volume +	Volume +
2	Volume -	Volume -	Volume -	Volume -	Volume -	Volume -	Volume -	Volume -
3	Mute	Mute	Mute	Mute	Mute	Mute	Mute	Mute
4	Preset +	Source	Source	Source	Preset +	Preset +	Preset +	Source
5	Preset -	Track +	Play	Search +	Preset -	Preset -	Preset -	Track +
6	Source	Track -	Track +	Search -	Source	Source	Source	Track -
7	Track +	Band/Disc +	Track -	Band	Track +	Track +	Track +	Audio
8	Track -	Preset/Disc -	Disc/FM +	Send/End	Track -	Track -	Track -	Power
9	Power	Select	Disc/AM -	Send	Band	Band	Band
10	Enter/Play	Attenuation	Answer	End	Answer	Reject Call/Source (Bluetooth equipped radios only)	Phone Menu
11	Band/Program	Phone Receive	Voice Dial		End	Skip	Answer Call
12	Receive	Phone Reject	On Hook		PTT	Skip	End Call
13	End	Voice Dial	Off Hook			Skip	Voice Activation
14	Voice Activation	Power	Mute (Multimedia units only)			Answer/End Call
- Advent, Boyo, Dual, Lightning Audio, Jensen, Rockford Fosgate & Visteon - Jensen &Advent ONLY

Description

The pac SWI-RC Steering Wheel Control Interface is a cutting-edge device that enables drivers to use their car's steering wheel controls to manage their smartphone's music, navigation, and phone calls. With universal compatibility, this device can be used in most vehicles, and the plug-and-play installation means that drivers can start using it right away. The device also features voice control integration, allowing drivers to use voice commands to manage their smartphone without taking their hands off the wheel or their eyes off the road.

Special Instructions

For General Motors Vehicles With Fan / Temp Control Buttons
To Map SWC button functions for GM vehicles with HVAC controls, first program the Vehicle Version # to 4. HVAC controls must be mapped BEFORE the other commands listed in the main chart above.

Start the vehicle. LED will flash 4 times to indicate the set Vehicle Version #.
Press and release programming button on SWI-RC. LED will turn on.
Within 7 seconds, press hold for 5 seconds the TEMP UP button on the steering wheel control. LED will turn off and back on.
The function is Mapped.
Repeat Step 3, using the TEMP DOWN Button.
If the vehicle is equipped with FAN UP and FAN DOWN buttons; Repeat step 3 for these buttons as well.
Once complete the LED will flash two times and stay on.
If the vehicle does not have FAN buttons press and release the programming button on the SWI-RC, this will skip those functions and the LED will flash two times.
Within 7 seconds, press and hold for 5 seconds the first SWC button to be mapped. See the R.F.M.O. chart above. (Volume +)
The LED will turn off during this process.
Map the rest of the SWC button functions, until all desired functions are mapped.
Release the button. The LED will turn on back on.
Once you have mapped all the desired button functions, wait 7 seconds. The LED will flash three times indicating end of mapping. The LED will flash 4 times to indicate the set vehicle version number(4).
Test the interface for proper functionality. Whenever an SWC button is pressed the LED on the interface should blink.

Pac SWI-RC Troubleshooting Guide

My vehicle is not listed in the identification and connection chart. If your specific vehicle is not listed may not mean that is it not compatible, but may mean we have not tested your vehicle or do not have any information (schematics) regarding your vehicle. If you are able to obtain specific information regarding your vehicle we may be able to help you to get this module working in your vehicle.
LED flashes when trying to program the vehicle version number. Please ensure that the rotary dial is set to the proper number and not to “0”. Refer to page 2 and select a radio position before turning on the ignition and attempting to program a version number.
No power / will not go into programming mode. Check red wire connection and fuse. Make sure interface is connected to switched +12 volts, not constant +12 volts. Make sure vehicle ignition is on.
The Interface controls the stereo immediately without pressing any buttons on the steering wheel. During mapping, press the buttons on the steering wheel FIRMLY for 5 seconds. Releasing the button too early will cause the Interface to send out a signal even when no buttons are pressed. Also ensure that the brown loop is not cut unless instructed.
The radio changes tracks when the vehicle is turned off or does not work when the car/truck is running. Wire a relay to provide power. Pin 86 of the relay will connect to the radio’s remote (Blue/White) wire. Pin 85 of the relay will connect to chassis ground. Pin 30 of the relay will need to connect to the vehicle’s constant 12v circuit. Pin 87 of the relay will need to connect to the red wire on the SWI interface. A standard 5 pin automotive relay (Single Pole Double Throw) should be used and can be found at most automotive parts stores.
I am using an Axxess radio replacement interface and I have programmed the vehicle version number, when I put the module into mapping mode to map the vehicle buttons the LED just flashes steady. Wire in relay as described in #5 (above)
When mapping the SWC button functions, it takes 5 seconds for the light to go out and it never comes back on, or it never turns off. Do the connection instructions say to connect another vehicle wire to accessory power or chassis ground? If so, test the circuit with a Digital Multi-Meter (the factory radio must be plugged in) and verify that the factory radio is providing the same output
The Interface controls the radio whenever the steering wheel is turned (mostly late 80’s early 90’s Honda/Acura) Program the interface for vehicle version #12.
The module is put into programming mode and once I press the Volume up button the LED turns off and does not come back on. This is normally an indication of a connection issue to the vehicle wiring. Double check the wiring with a digital multimeter to ensure the proper voltages are seen on the interface wires.
What are the rest of these wires on the interface’s 11 pin connector?
1. Green wire: (Used in versions 1, 2, 4 and 10) - 12v resistive systems normally found in GM vehicles.
2. White, White/Black and White/Red wire: (Used in versions 3, 8, 9 and 11) - 5v resistive systems normally found in Domestic and Japanese vehicles.
3. Yellow Wire: (used in version 5) Serial Data.
4. Orange Wire: (used in version 6 and 7) Serial Data.
5. Blue wire: (used in version 4) Data Output.
My module’s LED is flashing but it is not controlling the aftermarket radio.
- Check the respective output with a multi meter.
- Dial Setting 1,2,3,4 = DC voltage pulses on BLUE/YELLOW wire (this is serial data).
- Dial setting 5,6,7,8,9 = Variable resistance.
I am using a radio replacement Interface, an OS-4, OS-5, RP3 or C2R module, and the instructions for the vehicle version number are different from what is shown in the vehicle application guide. When using a radio replacement interface you will want to follow the instructions for the radio replacement interface and not the ones found in the vehicle application guide.
Only some SWC buttons are working. Verify wiring instructions and configuration. Some vehicles have multiple SWC wires, and sometimes require the addition of resistors.
Buttons do not work when car is running, only when car is not running. Perform "Mapping SWC button functions" in Step 4, but with the vehicle running.
Resistor Pack Definitions. These are the colors and values of resistors are provided with your SWI-RC module.

Wheel Control Interface Pros & Cons

Pros

Universal compatibility with most vehicles
Plug-and-play installation
Voice control integration
Compatibility with a wide range of smartphones
Compact and easy to use

Cons

May not work with some aftermarket stereos
Limited compatibility with certain smartphone models
May require additional wiring for some vehicles
May not work with all steering wheel control configurations

Customer Reviews about Pac SWI-RC Steering Wheel Control Interface

Customers who have purchased the Pac SWI-RC Steering Wheel Control Interface have praised its ease of use, universal compatibility, and voice control integration. However, some customers have reported issues with compatibility with certain smartphone models and aftermarket stereos. Despite these minor complaints, the majority of customers have given the product positive reviews, citing its convenience and ease of use as major selling points.

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