Wiring harness

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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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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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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Diode for rear window wiper.



Fits:
Porsche 911 1974-89



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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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Engine Bay Lamp Wiring Harness Loom.

Fits:
Porsche 911 1974>>1985

Diagram Ref No 1

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External starter motor relay.
Bypass your expensive ignition switch and install a hot start relay that will lead the current directly to the starter.
We have a 6 or 12 volt version and it works in any classic.

Fits:
Porsche 911 / 924 / 928 / 914 / 944 / 968 / 356

This relay can be placed near the starter motor and is used to limit the starting current and no longer allow it to be switched via the ignition switch.

Hazard warning relay plug socket 4 pole.



Fits:
Porsche 911 - 1970to 1989
Porsche 964 - 1990 to 1994
Porsche 968 - 1992 to 1995
Porsche 914 - 1970 to 1976
Porsche 924S - 1986 to 1988
Porsche 944  - 1982 to 1991

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Ignition switch wiring harness loom.



Fits:
Porsche 911 - 1976 to 1984
Porsche 911 turbo - 1976 to 1984 (including)

Harness with 6 pole male connector that connects to ignition switch and comes with original colour coded wiring.

Harness will fit exactly like the original with the wire tube and oil resistant tape as original.

Terminals have rubber sleeves.

Harness comes with detailed connection instructions.

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 4

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Inline fuse for dash illumination lights. 



Fits:
Porsche 911 - 1965 to 1989

The power supply lead (black-blue) for the dashboard illumination is unfused.

A short in the brass bulb holder can lead to serious damage in your wiring harness. This easy to install inline fuse holder protects your wiring and expensive light switch.

This inline fuse can be positioned at the light switch in between terminal 58A  and the black blue wire(s) *
* for 1969 and 1970 models this wire will be black-purple.

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Interior light wiring harness loom - Targa

Fits:
Porsche 911 - 1969 to 1986 Targa Only

Harness for interior lights (Targa version)

Connects to main harness on right side under window.
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 ,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.

Diagram ref no 2

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Intermittent wiper relay wiring harness. 



Fits:
Porsche 911 - 1975 to 1977
Porsche 911 turbo - 1975 to 1977

Intermittent wiper relay wiring harness - 8 pole connector



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Protective sheath covering. 



Fits:

Porsche 911 / 912 - 1965 to 1989
Porsche 914

Protective sheathing cover for fuel ventilation lines and wiring harness

Click 'Zoom in' for large parts diagram.
Diagram ref no 42

Rear Indicator light wire harness - US Spec cars



Fits:
Porsche 911 - 1978 to 1986 (US / Canada)

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