Description
Complete digital air conditioning harness for Peugeot 307 vehicles from 2005.
This high-quality air conditioning wiring harness is designed for Peugeot 307 models and supplies power and signal connections between the climate control panel, blower motor, actuators (blend/recirculation/flap motors), temperature sensors and the A/C compressor clutch. Ideal for professional workshops and experienced DIY mechanics, the harness is referenced under product code 6445YX (internal code D5384) and matches the original layout for easy replacement. Installing the correct harness restores reliable HVAC operation, fixes intermittent fan/blend door faults and prevents shorts that can affect heater and A/C performance.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Peugeot 307 (from 2005)
- Product Codes: 6445YX
- Other Numbers: D5384
Compatibility and Fitment
Fits Peugeot 307 models from 2005 onwards. Typically used on vehicles equipped with the digital climate control module and related HVAC actuators. Verify the connector shapes and routing during installation to ensure proper fitment with hatchback and estate (SW) body styles where applicable.
Function and Benefits
The wiring harness transmits power and control signals for blower speed, flap/door actuators, temperature sensors and the compressor clutch. Replacing a damaged harness restores correct HVAC responses, eliminates intermittent faults, and prevents electrical shorts. Using the correct harness reduces diagnostic time and ensures reliable climate control operation.
Installation
- Disconnect the negative battery terminal before starting work.
- Remove necessary interior trim panels and the glovebox to access the HVAC unit and connector routes.
- Label connectors if needed, then unplug the old harness from the climate control unit, blower motor and actuators.
- Carefully route the new harness following the original clips and channels; avoid sharp edges and heat sources.
- Check and clean connector pins; apply dielectric grease to prevent corrosion if appropriate.
- Reconnect all plugs, secure the harness with original clips or suitable replacements, reconnect the battery and test all HVAC functions (fan speeds, temperature control, flap movements, A/C engagement) before reassembling trim.
Recommended Tools and Tips
- Basic hand tools (screwdrivers, trim tools, pliers).
- Multimeter for continuity and voltage checks.
- Dielectric grease and quality cable ties or replacement clips to secure the harness.
- Work in a dry, well-lit area and take photos of connector positions before disconnecting to simplify reassembly.
Why This Part Fails
Common failure causes include mechanical wear, chafing against bodywork, moisture ingress and connector corrosion, rodent damage, or insulation deterioration due to heat and age. Symptoms of a failing harness are intermittent blower operation, inoperative flap actuators, blown fuses, or complete loss of climate control functions. Replacing the harness typically resolves electrical faults originating in damaged wiring or unreliable connectors.
Mounting Recommendations
- Always disconnect the battery before removal and follow manufacturer procedures to avoid damage to electronic components.
- Ensure correct routing and secure all mounting clips to prevent future chafing or rubbing.
- Inspect related components (blower motor, actuator gears, fuses) while the harness is accessible; damaged components can shorten harness life.
- After installation, verify full operation of the climate system through all modes and fan speeds before final reassembly.
