PAC Radio Replacement Interface for Chrysler Dodge Jeep RAM (2004-17) — Retains Steering Wheel Controls & Amplifier

The PAC Radio Replacement Interface lets you swap an OEM radio for an aftermarket unit while keeping steering wheel controls, safety interlocks and many factory features intact.

Upgrading the factory stereo in compatible Chrysler, Dodge, Jeep and RAM vehicles often means losing useful factory functions. This PAC interface was engineered to bridge that gap: it translates vehicle data and retained outputs so a new head unit behaves like the original system. It supports amplifier retention, navigation-related outputs, and data-driven accessory control to simplify installation and preserve convenience features.

How does this interface preserve steering wheel controls and OEM conveniences?

The PAC module interprets the vehicle’s data bus and reproduces control signals the aftermarket radio expects. That lets you keep using volume, track and voice buttons on the wheel without extra add-on modules. It also maintains certain instrument-cluster behaviors tied to the radio.

• Translates factory button commands to aftermarket radio inputs
• Maintains radio-linked cluster messages and indicators
• No need for separate steering-control adapters in many installs
• Works with systems that rely on vehicle data for control

Which vehicle outputs and safety interlocks does the interface retain?

This interface provides data-controlled outputs for common navigation and safety signals so the new radio and vehicle systems stay coordinated. Signals such as speed sense, reverse, and electronic parking brake status are reproduced for head units that require them. The accessory (RAP) output is also data-driven to match factory accessory behavior.

• Data-controlled RAP accessory output for correct delayed power-off
• Speed sense output compatible with navigation and head unit features
• Reverse and e‑brake status outputs for camera and safety inputs
• Navigation-based outputs to interface with OEM navigation wiring

What installation benefits and features will an installer notice?

Installers will find the interface simplifies wiring by consolidating multiple retained functions into a single module. It arrives preloaded with the signal mappings needed for supported model years, reducing time spent programming. The interface is designed to integrate cleanly into the factory harness for a tidy, reliable connection.

• All-in-one solution reduces separate wiring adapters
• Preprogrammed settings for supported vehicle ranges
• Clean connection to factory harness for professional installs
• Reduces need for custom soldering or aftermarket relays

Will audio amplifiers and OEM sound systems still work after replacing the radio?

Yes — the interface supports amplifier-retention so factory amplifiers continue to receive appropriate signals. That preserves the original sound system’s power and processing while letting you use a modern head unit. Confirm vehicle compatibility to ensure specific amp architectures are supported.

• Preloaded amp-retention mappings for supported models
• Maintains speaker-level or line-level outputs as required
• Prevents loss of factory DSP or powered speaker operation in many cases
• Helps preserve OEM equalization and amplifier control signals

Who this is for: This interface is aimed at installers, DIYers and vehicle owners replacing the factory radio in Chrysler, Dodge, Jeep or RAM models from 2004 through 2017 who want to keep steering wheel controls, amplifier functionality and factory safety interlock signals. If you need a single, preconfigured module that reduces wiring complexity and preserves important OEM behaviors while installing an aftermarket head unit, the PAC replacement interface is designed for that job.