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5-Pin Automotive Heater Resistor Connector 1544551-1 | Citroën Grand Picasso Renault Peugeot Kia Hyundai | Female / 15cm Harness

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5-Pin Automotive Heater Resistor Connector — OEM 1544551-1 | Citroën / Renault / Peugeot / Kia / Hyundai

The correct replacement connector for a failed or damaged blower motor resistor (heater resistor) wiring harness plug on Citroën Grand Picasso, Renault, Peugeot, Kia, and Hyundai vehicles. When the plastic housing of the heater resistor connector melts, cracks, or the terminals corrode — causing intermittent fan speed control, a stuck fan speed, or complete blower failure — replacing the connector is the correct repair. This connector matches OEM part number 1544551-1 and is available as a bare female connector + terminals kit, or as a pre-wired 15cm harness for fast splice repair.

Specifications

OEM Part Number	1544551-1
Pin Count	5 Pin
Gender	Female (connector side)
Application	Blower motor resistor (heater resistor) wiring harness
Compatible Vehicles	Citroën Grand Picasso, Renault, Peugeot, Kia, Hyundai
Options	Female connector set / 15cm pre-wired harness
Origin	Mainland China

Why Heater Resistor Connectors Fail

The blower motor resistor is located in the HVAC air duct, directly in the airflow path. This location exposes the connector to:

Thermal stress — the resistor generates significant heat during operation, especially at low fan speeds where resistance is highest. Over years of cycling, the plastic housing softens, deforms, and eventually cracks or melts.
High current — the blower motor draws several amps through the resistor connector. High resistance at corroded terminals causes localised heating that accelerates connector failure.
Vibration fatigue — engine and road vibration causes terminal fretting corrosion and housing cracking over time.

Symptoms of a failed heater resistor connector include: fan only works on one speed (usually maximum), fan speed control is intermittent, burning smell from the HVAC system, or complete blower failure.

Package Options

Option	Contents	Best For
Female Connector Set	1× Female housing + terminals	Custom crimp assembly, professional repair
15cm Wire Harness	Pre-crimped female connector with 15cm colour-coded leads	Fast splice repair, no crimping tool needed

Key Features

✅ OEM 1544551-1 compatible — direct dimensional match for factory heater resistor harness connector
✅ 5-pin configuration — covers all fan speed control circuits in the blower motor resistor harness
✅ High-temperature resistant housing — withstands the thermal environment of the HVAC blower resistor location
✅ Pre-wired harness option — 15cm colour-coded leads for fast splice repair without specialist crimping tools
✅ Multi-brand compatibility — fits Citroën, Renault, Peugeot, Kia, and Hyundai platforms using the 1544551-1 connector

Compatible Vehicles

Citroën Grand Picasso (C4 Picasso / Grand C4 Picasso)
Renault (models using 1544551-1 blower resistor connector)
Peugeot (models using 1544551-1 blower resistor connector)
Kia (models using 1544551-1 blower resistor connector)
Hyundai (models using 1544551-1 blower resistor connector)

Cross-reference the part number stamped on your existing connector to confirm fitment on your specific model and year.

How to Replace the Heater Resistor Connector

Locate the blower motor resistor in the HVAC housing (typically accessible from under the dashboard or in the engine bay near the firewall).
Disconnect the battery negative terminal before starting electrical work.
Unplug the damaged connector from the resistor. Inspect the resistor terminals for damage — if the resistor terminals are also damaged, replace the resistor as well.
Cut the damaged connector from the harness, leaving maximum wire length.
For the 15cm harness option: splice each lead to the corresponding vehicle wire using waterproof butt connectors or solder + heat shrink.
Reconnect the battery and test all fan speeds before reassembling the dashboard.

Frequently Asked Questions

Q: My fan only works on the highest speed — is this the right part?
A: Fan-only-on-high is the classic symptom of a failed blower motor resistor or its connector. If the resistor itself is intact but the connector is melted or corroded, replacing the connector with this part will restore all fan speeds.

Q: Do I need to replace the resistor as well?
A: Inspect the resistor terminals when you remove the connector. If the resistor terminals are burnt, pitted, or deformed, replace both the connector and the resistor for a complete repair.