For precise aftermarket head unit integration, connect the constant 12V power cable to the fused ignition circuit labeled CIG on the vehicle’s harness adapter. This avoids draining the battery during parked modes while ensuring instant power delivery upon ignition activation. Identify the yellow wire (ISO standard designation) at pin position 8 on the harness connector–this carries permanent battery voltage.
Grounding requires a dedicated chassis point near the factory mounting location. Use the black wire (pin 7) from the original equipment connector, verifying resistance below 0.5 ohms for optimal noise suppression. Avoid shared grounds with lighting or accessory circuits to prevent interference during volume adjustments or bass response.
Speaker outputs follow a consistent pattern: front left positive (white), front left negative (white/black), front right positive (gray), and so on. Match these directly to the corresponding aftermarket harness leads, maintaining polarity to preserve spatial imaging. Wire gauge should not exceed 18 AWG for spans under 12 feet to prevent signal degradation.
Retain the OEM amplifier if present–bypassing it may result in insufficient power delivery to door-mounted units. Locate the pink/purple wire (pin 5) responsible for amplifier turn-on signals; splice this into the aftermarket head unit’s remote lead to maintain system synchronization during startup sequences.
For vehicles equipped with Uconnect or similar interfaces, preserve the data bus wires (pins 12–14). These carry steering wheel controls and vehicle diagnostics; incorrect handling may trigger error codes visible on the instrument cluster. Consult the vehicle-specific pinout reference for exact color coding variances between trim levels.
Complete Car Audio System Connector Reference for the 2013 Compact Sedan
Begin by locating the factory harness behind the audio unit in the center console. The main 12-pin connector (part #68319630AB) carries all speaker, power, and ground lines–match this first before modifying any wires.
Here’s the pinout from left to right when facing the rear of the head unit, confirmed against Mopar service bulletin #81-175-16:
- Pin 1: Left front tweeter (+), 0.5 mm² purple/black
- Pin 2: Left front tweeter (–), 0.5 mm² purple/white
- Pin 3: Right front tweeter (+), 0.5 mm² pink/black
- Pin 4: Right front tweeter (–), 0.5 mm² pink/white
- Pin 5: Constant 12V, 2 mm² orange, always hot
- Pin 6: Illumination, 1 mm² yellow/green, dims with dash lights
- Pin 7: Left rear full-range (+), 1 mm² dark blue/black
- Pin 8: Left rear full-range (–), 1 mm² dark blue/white
- Pin 9: Right rear full-range (+), 1 mm² light green/black
- Pin 10: Right rear full-range (–), 1 mm² light green/white
- Pin 11: Ground, 2 mm² black/light blue
- Pin 12: Switched 12V, 1 mm² light blue, active with ignition in RUN/ACC
Aftermarket adapters labeled “Chrysler C1” or “Mopar 12-pin” will mate directly; verify resistance between each speaker pair never exceeds 4 Ω for OEM amplifier compatibility. Remove the fuse for the amplifier (30A, slot 14 in the under-hood box) before testing continuity to prevent accidental shorts.
If retaining the factory amplifier (model RF-HX 40-10), keep the 8-pin amplifier connector intact; its red (+) and black (–) wires feed 12V and ground specifically for the internal crossover network. Cutting these voids the fade & balance settings saved in the vehicle’s BCM.
For cameras or GPS modules spliced into the same harness, use the illumination wire (pin 6) for trigger voltage–it’s already fused at 10A and mirrors the dash illumination schedule. Tap cleanly with a 0.5 mm² crimp connector rather than soldering; heat-shrink all joints to prevent intermittent corrosion seen in early Uconnect firmware versions (8.43.2.0 and below).
Twist each speaker pair at least three turns per 30 cm to reduce induced noise from the CAN bus; unshielded segments longer than 18 cm near the steering-column clock spring or TPMS module routinely pick up audible whine above 6 kHz. Route the antenna coaxial along the factory tray, securing every 10 cm with spiral wrap to avoid sagging that degrades FM sensitivity.
Compare the finished harness with the 1:1 prototype table below–any deviation larger than ±0.2 VDC on the constant 12V leg indicates a parasitic draw that can drain the battery in under 48 hours.
- Constant 12V: 12.4–12.6 VDC key-off, 13.8–14.4 VDC key-on
- Switched 12V: 0 VDC key-off, 12.0–12.4 VDC key-on
- Illumination: 0 VDC key-off, 8–11 VDC key-on (dims 0–100%)
- Speaker impedance: 3.9–4.1 Ω per channel, phase-checked at 1 kHz
- Ground reference:
Finding the Right Audio System Plugs in Your Compact Sedan
Begin by accessing the rear of the head unit housing–typically positioned beneath the climate controls. Remove the trim panel by releasing the plastic clips along its perimeter; pry gently with a trim tool at the upper corners first, then work downward. The primary harness connector will be a 12-pin rectangular plug (black or gray) labeled “C1” on the OEM documentation, while the secondary harness may include an 8-pin square plug (often white) for amplified systems or factory navigation. Check for color-coding: yellow leads carry constant 12V power, red supplies accessory power, black grounds the system, and orange typically handles illumination. Verify each pin’s function with a multimeter before disconnecting–mistaking the ignition-switched wire for a constant feed risks draining the battery.
Avoiding Misidentification of Factory Adapters
Inspect the factory harness for aftermarket modifications; some models include an integrated adapter with smaller connectors like the 4-pin mini-ISO for tweeters or a separate 6-pin plug for steering wheel controls. If the original equipment lacks these, consult the vehicle’s build sheet–located in the glove box or accessible via the manufacturer’s online portal–to confirm optional features like the Uconnect system or premium audio package, which alter connector configurations. Label each plug immediately after detachment to prevent mixing signals during reinstallation; masking tape and a fine-tip marker work better than reliance on memory alone.
Decoding Harness Colors for the OEM Audio Integration
Locate the 12-pin connector behind the head unit–pin numbers ascend clockwise from the upper left. The solid orange lead (pin 1) delivers constant 12V power, while the light blue with a white stripe (pin 3) triggers amplifier activation during audio playback. Yellow with black tracer (pin 5) carries ground; verify no resistance exceeds 0.5 ohms between this wire and chassis.
Front left speaker outputs are split: solid green (pin 9) handles positive, green with violet stripe (pin 10) negative–confirm polarity with a 1.5V battery test before soldering. Rear right channels follow identical logic: solid violet (pin 11) positive, violet with white stripe (pin 12) negative. Twist each pair separately before routing to minimize interference; avoid bundling with power wires.
For hardware retaining steering wheel controls, splice the gray with black stripe wire (pin 7) to the aftermarket interface’s data input using heat-shrink connectors– nunca connect directly to the vehicle’s CAN bus without isolation. The pink with black stripe (pin 6) provides illumination; tap this wire to sync dashboard dimming with new equipment but limit current draw below 100 mA to prevent dash fuse overload.
Parking brake detection relies on two wires: solid black (pin 4) grounds the circuit, while brown with white stripe (pin 8) toggles high (3.3V-5V) when engaged–bypass this circuit only if updating firmware allows forced video playback. Use a digital multimeter’s diode test mode to identify dead shorts; expected readings hover between 0.45V and 0.6V across active leads.
When finalizing connections, wrap each joint with electrical tape, then apply a secondary layer of silicone self-fusing tape to resist vibration-induced degradation. Test harness continuity with a 9V battery and LED: a dim but steady glow confirms correct wiring before reinstalling trim panels.
How to Connect a New Audio System in Your Vehicle
Disconnect the negative terminal on the car battery to prevent short circuits. Locate the factory harness behind the original head unit–it’s typically secured with screws or clips. Remove the dash panel using a trim tool to avoid scratching surfaces.
Identify the wiring colors from the vehicle’s harness: yellow (constant power), red (switched power), black (ground), blue/white (remote turn-on), and speaker wires (striped pairs). Use a multimeter to confirm voltage on yellow (12V) and ground continuity on black.
Splice the harness adapter to the aftermarket unit’s connector. Match colors precisely–incorrect pairing can damage amplifiers or cause speaker imbalance. For vehicles with amplified systems, connect the blue/white wire to the external amp trigger if supported.
Mount the new unit’s installation kit bracket into the dash cavity. Secure it with screws, ensuring alignment with the vehicle’s trim. Feed the connected harness through the bracket opening, avoiding pinched wires.
Test audio functionality before final assembly. Reconnect the battery terminal, turn the ignition to accessory mode, and verify all channels produce sound at equal volumes. Adjust fader/balance settings if imbalance is detected.
If static or distortion occurs, check ground connections–sand paint from the chassis contact point until bare metal is exposed. For persistent issues, inspect speaker wires for shorts or improper polarity (positive/negative reversed).
Reinstall the dash panel, pressing firmly until clips snap into place. Store the original head unit and harness for potential reinstallation. Keep wiring diagrams handy for future troubleshooting or system upgrades.