Get Started Here Choose your vehicle, product and radio to obtain installation instructions.
Frequently Asked Questions
SWC is an acronym standing for Steering Wheel Control. An SWC interface is a module that connects a vehicle’s OEM steering wheel controls with an aftermarket headunit or radio replacement unit.
PAC SWC interfaces let you retain the function of OEM steering wheel controls after the factory radio has been removed and replaced with an aftermarket model. In some cases, our SWC interfaces even support factory installed features like Bluetooth™.
PAC pioneered the OEM steering wheel control (SWC) category back in the 1990’s, and continues to set the standard for quality, reliability and ease of installation. PAC holds three US patents for SWC interface engineering and is looked to by the mobile audio and electronics industry as the “go to guys” for SWC interface innovations.
Our SWC interfaces are designed to work with most major automobile makes and models, as well as most aftermarket radios currently available. Specific applications can be found in the most recent PAC catalog, as well as on this website. For a PDF applications table, click here.
In some cases, you will need an additional radio replacement interface to retain certain premium factory features (ie: OnStar®, SYNC®, video display control). All PAC SWC interfaces are designed for quick, seamless, plug-and-play installation with other popular PAC (and select Peripheral) branded radio replacement solutions.
If you vehicle does not appear in the application guide, then it is either incompatible or our R&D technicians have not yet verified that specific make/model/year of vehicle with the SWC interface in question. We update our applications database daily and work very hard to validate new vehicles as they become available.
You’re in luck, because both are just a click or a phone call away. You can download PDF files of any or all of our SWC interfaces by visiting the Downloads section of this website. Additionally, you can use the SWC Toolbox to find a bunch of helpful information, including programming instructions, wiring diagrams and a SWC resistance calculator. Additionally, PAC tech support is available six days a week at 866-931-8021.
All PAC SWC products carry a one (1) year warranty against defects in workmanship or materials, not including normal wear and tear or abuse of the product. All PAC products are warranted to be free from defects prior to installation. This warranty only applies to original purchasers of PAC products from a PAC dealer. PAC will only replace or repair warranted items that receive a RA number from PAC customer service, and all returns must be accompanied by a proof of purchase from an authorized PAC dealer. Any modification or improper use of a PAC product will void this warranty. The PAC warranty does not cover installation or damages caused by installation. Proper installation and use of PAC products will not void any automaker warranty.
For SWI-CP2 and SWI-CP5, use our online web-based ControlPro guide.
Downloads & Instructions
- Tech Bulletin - SWI-X - Locating Steering Wheel Control Wire in Vehicles
- Tech Bulletin - SWI-X and Rear Seat Controller Bulletin
- Tech Bulletin - 1998 Honda Accord
- Tech Bulletin - 1988 Nissan-Datsun 300ZX Steering Wheel Switch Diagram
- Tech Bulletin - Harley Davidson with 3 Additional Buttons
- Tech Bulletin - Harley Davidson - Steering Wheel Interface
- Tech Bulletin - Harley Davidson - 1997 and older
- Tech Bulletin - Harley Davidson
- Tech Bulletin - 2002 Maxima and Altima
- Tech Bulletin - Honda S2000 Inverting the mute's positive output to a negative using a SPDT relay