Wiring harness

Luggage compartment wiring harness loom.



Fits:
Porsche 911 - 1970

Complete main harness with original colour coded wiring.

Shown fuseboxes are not included

Runs from front fusebox to dashboard and harness will exactly fit like the original.
Wire tube and oil resistant tape are as original and terminals have rubber sleeves.

Harness comes with detailed connection instructions.

• 2 x Single bulb holder for headlight signal lights included.
• Fuel pump connector, boot and cable entry grommet included.

As original coloured wiring.

Original neoprene terminal sleeves used, (no shrink wrap)

Very high quality flex automotive grade wiring, ISO6722:2002 / DIN72551/6 / EEC directive 2000/53

Gasoline, oil, battery acid, engine coolant resistant.

High flex sleeving is very resistant to solvents and free of halogen, sulphur and phosphorous.

Special order made to order parts please allow 2 – 4 weeks

Handmade to concourse quality.

Click 'Zoom in' for large parts diagram.
Diagram ref no 2

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9116120

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Tunnel wiring harness loom.



Fits:
Porsche 911 - 1971

Complete tunnel harness with original colour coded wiring.

Runs from front fusebox / gauges through tunnel to the engine bay.

Harness will exactly fit like the original.

Wire tube and oil resistant tape as original and the terminals have rubber sleeves.

Harness comes with detailed connection instructions.

2 x new 6 pole male connector , 1 x 14 pole male connector, fuel pump connector (rear) , rubber sleeve and grommet included.

Special order made to order parts please allow 2 – 4 weeks

Handmade to concourse quality.

Click 'Zoom in' for large parts diagram.
Diagram ref no 1

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9116120

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Air conditioning relay wiring harness loom.

Fits:
Porsche 911 - 1974 to 1984
Porsche 911 turbo - 1974 to 1984

Loom - NR 80

Complete harness from fusebox to relay socket (AC control relay) and 2 pole female connector.
As original coloured wiring.

Original neoprene terminal sleeves used, (no shrink wrap)

High quality flex automotive grade wiring, ISO6722:2002 / DIN72551/6 / EEC directive 2000/53

Gasoline, oil, battery acid, engine coolant resistant.

The high flex sleeving is very resistant to solvents and free of halogen, sulphur and phosphorous.

Click 'Zoom in' for large parts diagram.
Diagram ref no 1

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91161208001

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Air conditioning thermo switch wiring harness loom - Left Hand Drive (LHD)



Fits:
Porsche 911 - 1978 to 1989
Porsche 911 turbo - 1978 to 1989

Wiring Harness Nr. 29
Thermo Bi-metal Switch - Left hand Drive

Model: M559 - 1978-1989, Air conditioner

Special order made to order parts please allow 2 – 4 weeks

Handmade to concourse quality.

Click 'Zoom in' for large parts diagram.
Diagram ref no 12

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91161202901

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Air conditionong wiring harness loom.

Fits:
Porsche 911 - 1974 to 1984
Porsche 911 turbo - 1974 to 1984

Loom - NR 78

Complete harness from fusebox to AC control relay and 6 pole female connector.

As original coloured wiring.
Original neoprene terminal sleeves used, (no shrink wrap)
High quality flex automotive grade wiring, ISO6722:2002 / DIN72551/6 / EEC directive 2000/53
Gasoline, oil, battery acid, engine coolant resistant.
The high flex sleeving is very resistant to solvents and free of halogen, sulphur and phosphorous.

Special order made to order parts please allow 2 – 4 weeks

Handmade to concourse quality.

Click 'Zoom in' for large parts diagram.
Diagram ref no 8

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91161207801

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Alternator wiring harness Motorola. 



Fits:
Porsche 911 2.0ltr - 1969

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Diagram ref no 4

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90161203725

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911 Break Out Box - Not to be missed in every Porsche workshop
The 911 Break Out Box is a professional-grade diagnostic tool for Porsche 911 and 930 models built from 1970 to 1989. By inserting the breakout harness between the original 14-pin connector and the vehicle’s wiring, the electrical system remains fully operational while you perform precise measurements and troubleshooting. Built with superb, durable quality, this tool is designed for everyday workshop use.

Fits:
Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
Porsche 911 1978-1983 3.0L / SC
Porsche 911 1984-1986 3.2L
Porsche 911 1987-1989 3.2L G50
Porsche 911 1975-1977 3.0L Turbo (930)
Porsche 911 1978-1989 3.3L Turbo (930)

What the Product Does

• Quick Diagnostics: Allows easy access to electrical circuits without disrupting the system.
  
• Safe Testing: Features 4mm banana socket plugs for reliable voltage, continuity, and resistance measurements.
  
• Built-in Features: Includes an LED voltmeter for quick battery voltage checks and an illuminated start button for controlled cranking or starting.
  
• Accurate Mapping: Test connections correspond exactly to the original 14-pin connector layout.
  
• Complete Kit: Comes with ground lead and detailed wiring diagrams for straightforward use.
  

The LED voltmeter lets you monitor battery voltage at a glance.
Easily test and measure:

• Starter circuit
• Oil pressure & oil temperature
• Backup light
• Oil level sensor
• Sportomatic system
• RPM signal
• WUR (Warm-Up Regulator)
• Engine fan
• Alternator field current

Symptoms That Require a Break Out Box

• Intermittent starting or electrical faults not traceable by standard tools.
• Sensor or wiring issues causing irregular engine performance.
• ECU or relay miscommunication requiring deeper circuit access.
• Need to test voltage or signal continuity without removing components.

Common Reasons for Failure or Replacement

• Workshop Wear: Connectors, pins, or sockets can wear out from heavy use.
  
• Damage: Drops, bent contacts, or improper storage may affect accuracy.
  
• Aging Tools: Older breakout boxes may not provide stable readings.
  
• Reliability Issues: A faulty or low-quality unit risks misdiagnosis.

Why  Invest in One?

• Provides accurate, safe diagnostics while keeping the car operational.
  
• Saves time by pinpointing wiring and sensor faults quickly.
• Prevents unnecessary replacement of expensive electrical parts.
• Essential for professional Porsche service shops and serious restorers.
• Ensures long-term reliability with a durable, workshop-ready design

Ideal For: Porsche 911/930 specialists, restorers, and workshops needing precise, repeatable electrical testing beyond standard OBD methods.

Cable tie wrap. 



Fits:
Porsche 911 - 1970 to 1989
Porsche 914 - 1970 to 1976
Porsche 928 - 1978 to 1995
Porsche 996 GT3 - 1999 to 2005
Porsche 997 turbo - 2007 to 2013

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Diagram ref no 13

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99951302340

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Complete tunnel harness, LHD (Left Hand Drive) cars.
This tunnel wiring harness (sometimes called a “tunnel cable harness”) used in Porsche 911 SC models (G-series) built roughly between 1978–1983. This wiring harness runs through the center of the car, connecting the fuse box to the rear lights, engine, and other electrical parts. It supplies power and signals to key systems, so if it’s damaged, lights, instruments, or other functions may stop working correctly.

Fits:
For Left Hand Drive (LHD) vehicles only
Porsche 911 SC 1978 - 83 

Diagram ref no 1

Quick Facts about tunbel wiring harness (91161200130)
•   Location: Runs through the transmission tunnel
•   Connections: Links fuse box to rear lights, engine bay & key modules
•   Function: Delivers power and signals to lighting, instruments, and electrical systems
•   Failure Symptoms: Flickering lights, faulty gauges, or loss of power to components
•   Importance: Essential for safe, reliable operation of multiple vehicle systems

Why Replacement Matters — Key Facts & Benefits:
•   Electrical Reliability: Old or damaged wiring in the tunnel harness can cause intermittent faults — lights flickering, instruments misreading, or even loss of power to critical components.
•   Safety: Faulty rear lights, inadequate ground connections, or exposed wires could lead to dangerous driving conditions or legal issues.
•  Prevent Further Damage: Wires rubbing, insulation degrading, or connections corroding may lead to short circuits. Replacing the harness early helps prevent fires, ECU damage or more costly electrical repairs.
•  Restoration & Fit: For those restoring or maintaining originality, having a correct, well-routed harness improves resale value and preserves proper factory spec.


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91161200130

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Complete tunnel harness.
The tunnel harness runs from the fuse panel to the instrumentation, switches, rear lights, and engine.



Fits:
Porsche 911 / 912 1965-68

Included with the harness are:
- Moulded connectors compatible with original plugs
- Pre-terminated fuse panel with fuses
- Bulb sockets for dash
- Neoprene covering around the torsion tube
- Correct colours of wire as per wiring diagram

Made in Canada

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Diode for rear window wiper.



Fits:
Porsche 911 1974-89



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91161710602

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Electric window power supply wiring harness loom.



Fits:
Porsche 911 - 1969 to 1975

Power supply harness.
This harness in installed in the trunk and supplies both doors, it has a round female 6 pole connector on the left and right.

It is connected to the front fusebox and ground studs (8mm eyelet) on both sides.

Other side of this harness needs to be connected to the terminal strip inside the door.

Handmade to concourse quality.

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90161207102

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Electric window wiring harness loom.

Fits:
Porsche 911 - 1969 to 1973

Wire harness for power windows (this loom is mounted in the door) and connects to the power supply harness by a 6 pole male connector.
Other side of this harness needs to be connected to the terminal strip inside the door.

One loom required for each door

Handmade to concourse quality.

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Engine bay lamp wiring harness loom.

Fits:
Porsche 911 1974 to 1989

Harness from left rear light (tunnel harness) to engine bay light in engine lid & ground.

Diagram ref no 1

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91161204900

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Engine Bay Lamp Wiring Harness Loom.

Fits:
Porsche 911 1974>>1985

Diagram Ref No 1

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Exterior mirror wiring harness, Nr 165, Driver's door



Fits:
Porsche 911 1987-89

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Diagram ref no 33

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