Product Overview: The PAC SWI-PS
interface allows you to retain the use of your steering wheel and/or rear seat radio controls when replacing the factory head unit in
select vehicles with a Sony or Pioneer head unit with wired remote capability. In some GM vehicles, this adapter allows you to retain heater control buttons as well.
You'll usually have to hardwire this adapter into your vehicle's wiring.
In most vehicles, the factory radio plug does not have a wire dedicated to the steering wheel audio controls, so splicing is often required. PAC does provide custom wiring instructions for all confirmed
compatible vehicles on their
The SWI-PS is
compatible with over 95% of the vehicles made from 1986 to the present.
Compatible vehicles include many Acura, Audi, BMW, Buick, Cadillac, Chevrolet,
Chrysler, Dodge, Ford, GMC, Honda, Hummer, Infiniti, Isuzu, Jaguar, Jeep, Kia,
Land Rover, Lexus, Lincoln, Mazda, Mercury, Mini, Mitsubishi, Nissan,
Oldsmobile, Plymouth, Pontiac, Saab, Saturn, Suzuki, Toyota, and Volkswagen
and Harley Davidson motorcycles. Please consult "What Fits My Car" to see if
your vehicle is compatible.
Known Incompatible Vehicles:
The following list includes the vehicles that are known not to be
- BMW: All with 5-volt SWC data wire
at the steering column or a factory installed cell phone that's in use
- Toyota: 1998-2003 Sienna vans
- Volvo: All 2002-up
Compatibility: The SWI-PS works with Sony head units with an input for the
RM-X2S, RM-X3S, or RM-X4S wired remotes. The adapter also works for all Pioneer
head units that have a wired remote control input. Note: The SWI-PS has a
3.5mm mini-plug connector.
Programmable: The SWI-PS can be easily programmed.
You can assign the buttons on the steering wheel to any of the 9 specific
functions: Volume Up, Volume Down, Mute, Track/Seek Up, Track/Seek Down, Source,
Preset/Disc Up, Preset/Disc Down, and Band. The SWI-PS has a non-volatile memory
which keeps all programming in memory, even if the vehicle's battery is
Some vehicles have a separate wire for each of the steering wheel buttons. Use
the resistor kit for steering wheel push buttons that do not already have a
resistor network connected to them. The resistor kit includes the following
- 47 Ohms (yellow,
purple, black, and gold bands)
- 100 Ohms (brown, black, brown, and gold bands)
- 150 Ohms (brown,
green, brown, and gold bands)
- 560 Ohms (green,
blue, brown, and gold bands)
- 1000 Ohms
(brown, black, red, and gold bands)
- 1500 Ohms
(brown, green, red, and gold bands)
- 3900 Ohms (orange, white, red,
and gold bands)
- 5100 Ohms (green, brown, red, and