PAC Steering Wheel Control Interface SWI-CP2 — Universal Analog & CAN‑Bus with USB PC Flashing and Button Learn

PAC SWI-CP2 preserves your vehicle’s factory steering wheel controls when installing an aftermarket radio, working with both analog and CAN-Bus systems. The PAC ControlPRO SWI-CP2 is a compact interface that keeps steering wheel button functions active after replacing a factory headset. Designed for modern vehicles with complex electronics—CAN bus, GMLAN, and Class II—the module connects between the car and the new receiver and maps factory controls to the aftermarket radio. Configuration options include DIP switches, PC flashing over USB, or an onboard learning routine, and companion apps supply vehicle wiring and switch settings to speed installation.

How will the SWI-CP2 save installation time?

The SWI-CP2 is engineered to reduce bench and vehicle time by offering ready-made vehicle configurations and multiple setup methods. Installers can pick the fastest approach for their workflow—preconfigured DIP settings, direct firmware flashing, or quick button learning on the bench or in-car.

• ControlPRO Web and mobile apps provide vehicle lookup and switch settings.
• USB PC flashing updates settings directly for precise mapping.
• On-device button learning lets you program functions without extra tools.
• Plug-and-play wiring harness minimizes splicing and guesswork.

What vehicle systems and radios are compatible with this interface?

The SWI-CP2 supports both resistive (analog) steering-wheel-control signals and modern data-bus systems, making it compatible with most popular aftermarket head units and vehicle platforms. It’s built to work with common vehicle networks so you won’t lose steering wheel functionality after an upgrade.

• Analog (resistive) steering wheel controls supported for older systems.
• CAN bus, GMLAN, and Class II data-bus compatibility for newer vehicles.
• Works with nearly all leading aftermarket receivers accepting steering wheel input.
• Provides a 2 A, 12V ACC output for data-bus applications needing accessory power.

How do I program custom button functions?

Programming can be done three ways so you can choose the level of control you need. Use DIP switches for a quick, documented setup; flash precise mappings from a PC via USB for advanced needs; or teach the module buttons through the built-in learning routine directly from the steering wheel.

• DIP switch method: use the app to find recommended switch positions for specific vehicles.
• PC flashing: connect via USB to the ControlPRO PC app for direct configuration.
• Button learning: press steering buttons to assign commands without a PC.
• Mobile/Web apps supply wiring diagrams and switch settings for each vehicle.

Who this is for Technicians, car audio installers and DIY enthusiasts who need a reliable, time-efficient way to retain factory steering controls will benefit from the PAC SWI-CP2. It’s especially useful when upgrading radios in vehicles with CAN bus or other complex networks, and for anyone who values multiple configuration options to match their preferred installation workflow. The compact module and comprehensive app support help ensure a clean, fast installation with predictable button mapping.

FAQ

Q: Does the SWI-CP2 work with CAN-bus vehicles?

A: Yes. The SWI-CP2 supports CAN bus, GMLAN and Class II systems as well as analog resistive steering controls.

Q: Can I program the unit without a PC?

A: Yes. You can use DIP switches, the onboard button learning mode, or mobile/Web apps for configuration.