Please wait… 
Please wait while we process your order,
do not press the back button…
do not press the back button…
Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
Category Filter
Rear window heater relay harness. Porsche 911 1971-73 - 91161205400
91161205400/1
Vehicle Group
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Information
Rear window heater relay harness
This OE Match rear window heater relay harness is a replacement wiring harness used in the heated rear window / rear screen demister system on Porsche 911 models from 1971 to 1973. It is designed to match the original-style wiring layout and provide a secure electrical connection for the rear window heater relay.
Fits:
Porsche 911 1971 - 1973
The relay harness connects the rear window heater relay into the vehicle’s electrical system, allowing power to be supplied correctly to the heated rear window circuit. It helps the rear window demister operate as intended, clearing condensation and improving rear visibility in cold or damp conditions.
Functions
• Connects the rear window heater relay to the vehicle wiring system
• Supports correct operation of the heated rear window circuit
• Helps supply power to the rear screen demister
• Restores proper electrical connection where the original harness is damaged
• Helps improve rear visibility by supporting demister function
• Replaces brittle, cut, corroded, or modified original wiring
• OE Match replacement for classic Porsche electrical restoration.
Why Replace This Part?
Original wiring harnesses can become brittle, cracked, corroded, overheated, or damaged after decades of use. Poor connections in the rear window heater relay harness may cause the heated rear window to stop working, operate intermittently, or suffer from voltage drop. Replacing the harness helps restore reliable relay connection and supports correct demister operation.
When to replace:
• The rear window heater or demister is not working
• The relay wiring is brittle, cracked, corroded, or damaged
• The harness has been cut, modified, or repaired incorrectly
• Electrical terminals are loose, burnt, or oxidised
• The rear window heater relay has been replaced
• The vehicle wiring loom is being restored
• The car is undergoing classic Porsche electrical or interior restoration
Where it fits on the car
This harness fits in the rear window heater electrical system, connecting the relay for the heated rear window circuit. It is used as part of the rear screen heater / demister wiring on Porsche 911 models from 1971 to 1973.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91161205400
The product you are viewing cross references to these numbers
This OE Match rear window heater relay harness is a replacement wiring harness used in the heated rear window / rear screen demister system on Porsche 911 models from 1971 to 1973. It is designed to match the original-style wiring layout and provide a secure electrical connection for the rear window heater relay.
Fits:
Porsche 911 1971 - 1973
The relay harness connects the rear window heater relay into the vehicle’s electrical system, allowing power to be supplied correctly to the heated rear window circuit. It helps the rear window demister operate as intended, clearing condensation and improving rear visibility in cold or damp conditions.
Functions
• Connects the rear window heater relay to the vehicle wiring system
• Supports correct operation of the heated rear window circuit
• Helps supply power to the rear screen demister
• Restores proper electrical connection where the original harness is damaged
• Helps improve rear visibility by supporting demister function
• Replaces brittle, cut, corroded, or modified original wiring
• OE Match replacement for classic Porsche electrical restoration.
Why Replace This Part?
Original wiring harnesses can become brittle, cracked, corroded, overheated, or damaged after decades of use. Poor connections in the rear window heater relay harness may cause the heated rear window to stop working, operate intermittently, or suffer from voltage drop. Replacing the harness helps restore reliable relay connection and supports correct demister operation.
When to replace:
• The rear window heater or demister is not working
• The relay wiring is brittle, cracked, corroded, or damaged
• The harness has been cut, modified, or repaired incorrectly
• Electrical terminals are loose, burnt, or oxidised
• The rear window heater relay has been replaced
• The vehicle wiring loom is being restored
• The car is undergoing classic Porsche electrical or interior restoration
Where it fits on the car
This harness fits in the rear window heater electrical system, connecting the relay for the heated rear window circuit. It is used as part of the rear screen heater / demister wiring on Porsche 911 models from 1971 to 1973.
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: €15.80
Orderable
Related products
Vehicle Group
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
Information
Exterior mirror wiring harness, Nr 165, Driver's door
Fits:
Porsche 911 1987-89
Click 'Zoom in' for large parts diagram.
Diagram ref no 33
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91161216504
The product you are viewing cross references to these numbers
Fits:
Porsche 911 1987-89
Click 'Zoom in' for large parts diagram.
Diagram ref no 33
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91161216504
91161216504
The product you are viewing cross references to these numbers
Price: €266.35
Orderable
Vehicle Group
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
Information
Exterior mirror wiring harness, Nr 166, Passenger's door
Fits:
Porsche 911 1987-89
Click 'Zoom in' for large parts diagram.
Diagram ref no 33
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91161216604
The product you are viewing cross references to these numbers
Fits:
Porsche 911 1987-89
Click 'Zoom in' for large parts diagram.
Diagram ref no 33
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91161216604
91161216604
The product you are viewing cross references to these numbers
Price: €61.04
Orderable
Vehicle Group
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Information
Turn signal wiring harness. NR 177.
Fits:
Porsche 911 1986-89
Porsche 964 1989-94
Porsche 993 >>1996
Click 'Zoom in' for large parts diagram.
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91161217702
The product you are viewing cross references to these numbers
Fits:
Porsche 911 1986-89
Porsche 964 1989-94
Porsche 993 >>1996
Click 'Zoom in' for large parts diagram.
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91161217702
91161217702
The product you are viewing cross references to these numbers
Price: €95.27
Orderable