Alternator wiring loom, for Bosch alternators. Porsche 901 / 911 1969-73  ›  90161203720

OE Match alternator wiring loom for Porsche 901 / 911 models from 1969–73 equipped with Bosch alternators. This replacement harness serves the wiring connection between the alternator and voltage regulator.

Fits

• Porsche 911 1969-73
  
  

Check fitment for your specific vehicle (model, year, engine) before ordering.

What This Product Does

The loom groups the electrical connections associated with the alternator and regulator. It is a wiring component, rather than a replacement alternator or voltage regulator, and is intended for repairs involving damaged or deteriorated charging-system wiring.

Functions

• Connects the Bosch alternator and regulator wiring.
• Groups the associated conductors into a harness.
• Provides a replacement for deteriorated wiring during electrical repairs or restoration.
  
  

Technical Details

• Part number: 90161203720.
• Brand: OE Match.
• Application: Bosch alternator wiring.
• Internal diagram description: wiring harness NR. 2 0, regulator/generator, Bosch.
  
  

Symptoms of Fault

• Charging that becomes intermittent or insufficient.
• Battery warning lamp illumination or flickering lights.
• Cracked, brittle or melted wire insulation.
• Corrosion at terminals or connectors.
• Electrical behaviour that changes when the wiring moves.
  
  

Why Replacement Matters

Renewal may be appropriate when conductors are damaged, insulation has deteriorated, connections have corroded or earlier repairs have left unreliable joins. Confirm the source of the fault first: battery condition, earth connections, alternator and regulator faults can produce similar symptoms. Replacing the loom will not correct a defective charging unit.

FAQs

• Is this the alternator itself?
  No. The product is the wiring loom for a Bosch alternator application.
• What should be checked before replacement?
  Inspect the existing harness, terminals, battery connections and earth straps. Electrical testing should establish whether the wiring is responsible for the charging fault.
• Does the model year alone confirm compatibility?
  No. Compare the installed alternator, regulator connections and existing loom with the required application, particularly if the charging system has previously been changed.
• Can the original wiring be repaired instead?
  A localised defect may be repairable, while widespread insulation damage or corrosion can justify replacing the harness.