Engine harness for Motorola alternator. Porsche 911 1970-71 › 91161201700

This OE Match engine harness for Motorola alternator applications connects the engine electrical circuits on Porsche 911 models from 1970–71. It provides a replacement wiring assembly when the existing loom has deteriorated or suffered damage.

Fits

• Porsche 911 1970–71 — with Motorola alternator.
  
  These broader model classifications do not extend this harness's application beyond Porsche 911 1970–71 with a Motorola alternator. Confirm the alternator currently fitted, particularly if the charging system has previously been changed.
  
  Check fitment for your specific vehicle (model, year, engine) before ordering.
  
  Diagram ref no 20
  
  What Is This Part?

This is the engine wiring loom specified for the Motorola alternator installation. The harness forms the electrical connection between the engine and the engine-compartment fuse-panel wiring, grouping individual circuits into a routed assembly. Its conductors and connections carry electricity between the connected components and the vehicle wiring. During restoration or engine work, its condition should be assessed alongside the terminals, earth connections and surrounding wiring.

What Does This Part Do?

• Connects engine wiring: Links the engine electrical circuits to the engine-compartment wiring connection.
• Serves the Motorola installation: Provides the engine harness application specified for this alternator arrangement.
• Groups individual circuits: Keeps the engine wiring together as a loom for routing and connection.
• Replaces deteriorated wiring: Allows a damaged engine harness to be renewed as an assembly rather than retaining multiple unreliable repairs.
  
  Why Replace This Part?

Engine-bay heat, vibration and age can leave insulation brittle, damage conductors or loosen connections. Corroded or poorly secured terminals can introduce electrical resistance, causing voltage loss and intermittent charging faults. Replacement may be appropriate where inspection confirms widespread deterioration, damaged connections or previous repairs that cannot be put right satisfactorily.

A charging warning or flat battery does not establish that the harness is faulty. Check battery condition, earth straps, alternator connections and charging-system operation before deciding which component needs replacing. A sound harness does not need automatic replacement whenever the alternator is removed.

When to Replace This Part?

• Cracked insulation: Brittle, split or missing covering exposes the conductors.
• Heat damage: Melted insulation, discolouration or burnt connections require investigation.
• Damaged wiring: Chafed, cut or fractured conductors are found during inspection.
• Corroded terminals: Connections are damaged or no longer make secure electrical contact.
• Confirmed electrical loss: Continuity or voltage-drop testing identifies a fault within the harness.
• Unsatisfactory previous repairs: Multiple damaged joins or altered connections make reliable repair impractical.
  
  Where Is This Part Fitted?

Location: In the rear engine compartment, running between the engine electrical connections and the engine-compartment fuse-panel harness. During fitting, check routing and supports so the loom is not stretched, trapped or left rubbing against adjacent parts. Disconnect the battery before disturbing alternator electrical connections.

Technical Details

• Country of manufacture: Canada.
• Electrical application: Engine harness for Motorola alternator installation.
  
  FAQs

• Should I replace the harness for a charging fault alone? No. Inspect the wiring and connections, then test the charging system to establish the cause.
• Can an individual damaged wire be repaired? A localised defect may be repairable using suitable automotive wiring methods. Widespread insulation damage or corrosion may justify harness replacement.
  
  Product Summary

• Product: Engine harness for Motorola alternator.
• Brand: OE Match.
• Purpose: Connects engine electrical circuits to the engine-compartment wiring.
• Manufacture: Made in Canada.