Connector gets hot

Possible causes

General, component-based causes – not a manufacturer-specific statement.

• Loose/oxidised connector
• Cable break at moving parts
• Water ingress

Safe test steps

• Check the harness while flexing (continuity, unpowered).
• Voltage drop across the connector under load.

Workshop reference values

• Voltage drop across one connector under load: < 0.1 V good, > 0.3 V abnormal (rule of thumb).

Repair approach

• Replace connector, repair cable with solder and heat-shrink.

Tools needed

• Digital multimeter (CAT III, fused inputs)
• Contact cleaner, dielectric grease
• Soldering iron, heat-shrink