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Porsche // 997 (911) MK2 2009-2012 // 997 MKII Carrera C2S 3.8L 2009-12
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Rear window heater relay harness. Porsche 911 1971-73 - 91161205400
91161205400
Vehicle Group
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Information
Rear window heater relay harness
This Genuine Porsche wiring harness is used for the rear window heating / rear window defogger relay circuit, helping connect the relay system that powers the heated rear screen.
Fits:
Porsche 911 1971 - 1973
This rear window heater relay harness, also referred to as a rear window defogger relay harness or wiring harness for rear window heating - is used in the electrical system for the single-stage rear window heating circuit on early Porsche 911 models. The harness provides the correct factory-style wiring connection for the rear window heater relay system.
This harness fits within the vehicle electrical wiring system, connected to the rear window heater / rear window defogger relay circuit. It is associated with the rear window heating relay wiring and connects into the relay/fuse wiring layout used on early Porsche 911 models.
The rear window heater relay harness can become brittle, damaged, corroded or previously modified over decades of use. Poor wiring, loose terminals or incorrect repairs can prevent the heated rear window from working correctly. Replacing the harness with a Genuine Porsche OE wiring harness helps restore the correct factory connection and supports reliable rear window demister operation. It is especially useful during classic Porsche 911 restoration, electrical repair or loom refurbishment work.
When to replace:
• If the rear window heater / demister is not working correctly
• If the relay wiring is damaged, brittle, cut or missing
• During restoration of the rear window heating system
• When replacing or refitting the rear window heater relay
• If previous wiring repairs are incorrect or non-original
• During body, interior or electrical loom restoration
• When returning the car to factory OE wiring specification.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91161205400
The product you are viewing cross references to these numbers
This Genuine Porsche wiring harness is used for the rear window heating / rear window defogger relay circuit, helping connect the relay system that powers the heated rear screen.
Fits:
Porsche 911 1971 - 1973
This rear window heater relay harness, also referred to as a rear window defogger relay harness or wiring harness for rear window heating - is used in the electrical system for the single-stage rear window heating circuit on early Porsche 911 models. The harness provides the correct factory-style wiring connection for the rear window heater relay system.
This harness fits within the vehicle electrical wiring system, connected to the rear window heater / rear window defogger relay circuit. It is associated with the rear window heating relay wiring and connects into the relay/fuse wiring layout used on early Porsche 911 models.
The rear window heater relay harness can become brittle, damaged, corroded or previously modified over decades of use. Poor wiring, loose terminals or incorrect repairs can prevent the heated rear window from working correctly. Replacing the harness with a Genuine Porsche OE wiring harness helps restore the correct factory connection and supports reliable rear window demister operation. It is especially useful during classic Porsche 911 restoration, electrical repair or loom refurbishment work.
When to replace:
• If the rear window heater / demister is not working correctly
• If the relay wiring is damaged, brittle, cut or missing
• During restoration of the rear window heating system
• When replacing or refitting the rear window heater relay
• If previous wiring repairs are incorrect or non-original
• During body, interior or electrical loom restoration
• When returning the car to factory OE wiring specification.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91161205400
91161205400
The product you are viewing cross references to these numbers
Price: £18.78
Orderable
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Wire set alarm horn conversion kit .
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- Porsche 997 MKII Carrera C2 3.6L 2009-12
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Information
Wire harness for PDK valve body / hydraulic control unit.
Fits:
Models Equipped With PDK Transmission (PR 250)
Porsche 997-2 Carrera 2009-12
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Diagram ref. 27.
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Diagram ref. 27.
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Vehicle Group
- Porsche 996 C2 3.4L 1997-08/01
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Information
Support Bracket For Wiring Loom.
Diagram Ref No 8
This bracket helps hold the wiring loom in the correct position behind trim panels, within the dashboard area, or along body mounting points, preventing the harness from moving, rubbing, or hanging loose. Proper wiring support is essential for protecting connectors and insulation, reducing vibration wear, and maintaining long-term electrical reliability.
This part is typically required during electrical repairs, interior removal/refit work, accident repairs, or when the original bracket has broken or gone missing.
What This Product Does:
Symptoms Of A Missing Or Damaged Wiring Loom Bracket:
Why Replacement Matters:
Related reference numbers
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99761013100
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The Support Bracket for Wiring Loom is a genuine OEM Porsche mounting bracket designed to securely support and route the vehicle’s wiring harness (loom) in the electrical system of the Porsche 911 (996 and 997 generation).
Fits:
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
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- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
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- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
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- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
Diagram Ref No 8
This bracket helps hold the wiring loom in the correct position behind trim panels, within the dashboard area, or along body mounting points, preventing the harness from moving, rubbing, or hanging loose. Proper wiring support is essential for protecting connectors and insulation, reducing vibration wear, and maintaining long-term electrical reliability.
This part is typically required during electrical repairs, interior removal/refit work, accident repairs, or when the original bracket has broken or gone missing.
What This Product Does:
- Supports and secures the vehicle wiring loom in the correct position
- Prevents wiring from rubbing against sharp edges or moving parts
- Helps reduce vibration-related wear and electrical connector stress
- Maintains neat, OEM-style cable routing and fitment
- Supports safe and reliable operation of the vehicle’s electrical system
Symptoms Of A Missing Or Damaged Wiring Loom Bracket:
- Loose or unsupported wiring behind dash/interior panels
- Rattling noises caused by harness movement
- Wiring insulation wear or chafing marks
- Broken plastic/metal mounting points
- Electrical faults caused by stressed or loose connectors
- Poor fitment after previous repair work
Why Replacement Matters:
- Protects wiring and connectors from damage and chafing
- Helps prevent intermittent electrical issues and warning lights
- Restores proper OEM harness routing and support
- Reduces long-term risk of short circuits or wiring failure
- Ensures safe, tidy installation during repairs or restorations
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