Rear window heater relay harness. Porsche 911 1971-73  ❭  91161205400

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Related, superseded, cross reference or alternative numbers for comparison.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

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