Introduction to the 2013 Dodge Dart Infotainment Architecture

Upgrading the head unit in a 2013 Dodge Dart requires a fundamental understanding of the Fiat-Chrysler PF platform electrical architecture. Unlike legacy Chrysler vehicles that utilized a simple 12-volt ignition trigger wire, the 2013 Dart relies heavily on the Controller Area Network (CAN bus) to manage the infotainment system's wake and sleep cycles. Attempting to install an aftermarket stereo using only a generic wiring diagram without accounting for the CAN IHS (Interior High Speed) network will result in parasitic battery drains, retained accessory power (RAP) failures, and the loss of critical vehicle configuration menus.

This complete wiring diagram walkthrough provides the exact OEM pinouts, wire color codes, and integration strategies required to safely replace the factory radio in the 2013 Dodge Dart. Whether you are working with the base 4.3-inch Uconnect screen or the upgraded 8.4-inch navigation unit, understanding the underlying harness topology is mandatory for a clean, error-free installation.

Understanding the Uconnect and Base Radio CAN Bus Integration

The 2013 Dodge Dart does not feature a traditional switched 12V accessory (red) wire in the main radio harness. Instead, the radio module acts as a node on the CAN IHS bus. When the ignition cylinder is turned to the 'ACC' or 'RUN' position, the Totally Integrated Power Module (TIPM) broadcasts a wake command over the CAN IHS network. The factory radio reads this digital signal and powers on its internal relays.

When installing an aftermarket double-DIN receiver, you cannot simply tap into the cigarette lighter or fuse box for an ignition source without risking interference with the vehicle's data bus. The industry-standard solution is to use a CAN bus interface module, such as the iDatalink Maestro RR2 paired with the HRN-RR-CH3 vehicle-specific T-harness. This module intercepts the CAN IHS signals and translates them into a standard 12V accessory output wire, while simultaneously retaining steering wheel controls, the factory backup camera, and the vehicle settings menu (which controls door lock preferences, lighting, and TPMS resets).

2013 Dodge Dart Stereo Wiring Diagram: Main Harness Pinout

The primary connection point for the 2013 Dart radio is a 22-pin Chrysler-style connector. Below is the definitive pinout table for the main power and data harness. When probing these wires, always use a high-impedance digital multimeter to avoid shorting the delicate CAN bus transceivers.

Pin Number Wire Color Function Notes & Specifications
1 White / Light Green CAN IHS High (+) Digital data bus. Do not apply 12V power to this wire.
2 White / Light Blue CAN IHS Low (-) Digital data bus. Requires twisted pair routing to prevent EMI.
11 Black / Light Green Chassis Ground 14 AWG. Must be securely grounded to bare metal.
12 Red / White Fused B+ (Constant 12V) 14 AWG. Sourced directly from the TIPM. Hot at all times.
13 Dark Green / Red Front Left Speaker (+) 18 AWG. Standard 4-ohm impedance.
14 Dark Green / Black Front Left Speaker (-) 18 AWG. Do not ground speaker returns to the chassis.
15 Dark Green / White Front Right Speaker (+) 18 AWG. Standard 4-ohm impedance.
16 Dark Green / Brown Front Right Speaker (-) 18 AWG. Keep away from power cables to avoid alternator whine.
17 Dark Green / Light Green Rear Left Speaker (+) 18 AWG. Rear deck 6x9 inch speaker.
18 Dark Green / Tan Rear Left Speaker (-) 18 AWG. Standard 4-ohm impedance.
19 Dark Green / Orange Rear Right Speaker (+) 18 AWG. Rear deck 6x9 inch speaker.
20 Dark Green / Yellow Rear Right Speaker (-) 18 AWG. Standard 4-ohm impedance.

Expert Note on Wire Gauges: While the factory speaker wiring is typically 18 AWG, the constant 12V (Pin 12) and Ground (Pin 11) wires should be upgraded or supplemented with 14 AWG oxygen-free copper (OFC) wire when adding an aftermarket head unit with a high-current internal amplifier. The Uconnect system experiences a brief current spike during the initial boot sequence, and undersized power wires can cause the radio to reboot randomly.

Bypassing the Factory Amplifier (Alpine Premium Audio)

If your 2013 Dodge Dart is equipped with the optional 9-speaker Alpine premium audio system (RPO code RAS or RDD), the low-level pre-out signals from the factory radio are sent to an external amplifier located in the trunk on the driver's side behind the pull-back trim panel. The amplifier requires a dedicated 12V turn-on signal, which is also generated via the CAN bus.

When replacing the head unit, you have two choices:

  • Retain the Factory Amp: Use an interface harness like the Axxess XSV-90-0302 or the Maestro HRN-RR-CH3 to convert the aftermarket radio's RCA pre-outs back into the factory amplifier's input plug. Note that the factory amp is heavily equalized for the stock speakers, which may result in muddy mid-bass when paired with high-quality aftermarket speakers.
  • Bypass the Factory Amp: Run new 16 AWG speaker wires directly from the aftermarket radio to the door and deck speakers. You will need to remove the door panels, disconnect the speakers from the factory amp harness at the kick panels, and route the new wires through the A-pillar and door jamb rubber boots. This is the recommended approach for audiophiles seeking a clean, uncolored signal.

Antenna and Auxiliary Connections

The 2013 Dart utilizes a standard Motorola antenna connection, but it requires a 12V amplified antenna adapter (such as the Metra 40-CR10) to properly receive AM/FM signals, as the antenna booster is integrated into the rear window glass and requires a remote turn-on voltage. Additionally, if your vehicle is equipped with the center console auxiliary USB/AUX port, retaining this functionality requires a specialized USB retention cable (e.g., Metra AX-TOY-USB or the Chrysler-specific equivalent) that bridges the factory USB plug to the rear USB input of your new aftermarket stereo.

Common Installation Pitfalls and Troubleshooting

Working on the PF platform electrical system requires patience and precision. Below is a diagnostic decision tree for the most common issues encountered during a 2013 Dart stereo installation.

Symptom: Radio Turns Off When Turn Signal is Activated

  • Cause: CAN bus data collision or grounding issue. The turn signal module broadcasts heavily on the CAN IHS bus. If the radio ground (Pin 11) is shared with a lighting circuit or is poorly terminated, the voltage drop during the turn signal flash will corrupt the CAN IHS Low signal, causing the radio to reset.
  • Fix: Run a dedicated 14 AWG ground wire directly from the radio harness to a verified, unpainted chassis bolt behind the dash. Torque the ground bolt to 2.5 Nm (22 in-lbs) to ensure a gas-tight connection.

Symptom: Steering Wheel Controls (SWC) Not Responding

  • Cause: The SWC buttons in the 2013 Dart do not use a traditional resistive ladder network. They are hardwired into the Steering Column Control Module (SCCM), which then broadcasts button presses over the LIN bus to the radio via the CAN network.
  • Fix: A standard resistive SWC interface (like the PAC SWI-RC) will not work on a 2013 Dart. You must use a data-driven interface like the iDatalink Maestro RR2 or the Axxess ASWC-1 with the correct Chrysler data harness to translate the digital SCCM commands into commands your aftermarket radio understands.

Symptom: Parasitic Battery Drain Overnight

  • Cause: The aftermarket radio is not receiving the CAN bus 'sleep' command, keeping the vehicle's data bus awake and preventing the TIPM from entering deep sleep mode.
  • Fix: Verify that the CAN IHS High and Low wires are not crossed. Ensure your interface module firmware is fully updated via the manufacturer's website, as early firmware versions had bugs regarding the 2013 Dart's specific sleep-wake timing sequences. According to Metra Electronics technical bulletins, updating the interface module is the primary fix for FCA CAN bus sleep issues.

Hardware and Dash Disassembly Notes

To access the radio, you must carefully pry off the climate control bezel surrounding the shifter and lower dash panel. The radio is secured by four T20 Torx screws. When installing the new mounting bracket, use the supplied M5x12mm flange bolts and torque them to 4 Nm. Do not overtighten, as the plastic dash sub-frame on the PF platform is prone to cracking under excessive mechanical stress. Always use a plastic trim removal tool to avoid marring the soft-touch dashboard materials.

Authoritative References

For further technical verification, consult the following automotive electrical resources: