Complete tunnel harness, LHD (Left Hand Drive) cars. Porsche 911 SC 1978-83

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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