Porsche Cayman 987 Rear Tail Light Lamp Wiring Cable Left N/S 98763142303

The Porsche Cayman 987 Rear Left Lamp Wiring Harness is an original electrical installation component designed to service the driver's side rear lighting. Thanks to its factory-matched connector geometry and appropriately selected wire lengths, it ensures stable power supply and reliable control of the rear and brake lights. This solution is dedicated to Porsche users who expect precise fitment and hassle-free installation.

Specifications and technical data

• SKU: 98763142303-2
• Mark: Porsche
• Condition: Used
• OEM Part Number: 98763142303
• Substitutable numbers: 98763142303, 987 631 423 03, 987631445 03, 987 631 445 03
• Location on the vehicle: Rear, Left
• Category: Rear Light Assemblies

Purpose and Vehicle Placement

The presented wiring harness is a part of the electrical system responsible for powering and sending control signals to the rear lamp on the left side of the vehicle. Its placement in the rear body area means the component operates in an environment exposed to moisture, vibrations, and temperature changes, making its correct functioning directly impact the safety of the light signaling during braking and driving in low visibility conditions.

Construction and Technical Function

The rear lamp wiring harness in the Porsche Cayman 987 serves as the connection between the vehicle's main electrical system and the lighting module within the lamp. The set of wires carries power to the individual circuits for the position light, brake light, and other lamp functions, as well as transmits control signals from the vehicle's electronic systems. Appropriately selected wire gauges and insulation designed for the rear compartment ensure stable electrical parameters and minimize voltage drops.

Factory-terminated connectors allow for correct positioning in the lamp socket and body mounts, facilitating wire routing according to the original installation path. This minimizes the risk of chafing, excessive bending, or accidental disconnection during vehicle operation.

Benefits of Using an Original Harness

Using a dedicated wiring harness for the rear left lighting area maintains compliance with Porsche's factory specifications. In practice, this means:

• a secure electrical connection to the rear lamp without the need for installation modifications,
• preservation of the correct wire order and color coding consistent with service documentation,
• easier diagnosis of potential future faults,
• reduced risk of errors in light control systems.

For Porsche owners, it is important that lighting system components interact predictably with the vehicle's electronics. An appropriately selected wiring harness helps maintain the integrity of the electrical system and the correct operation of safety systems.

Condition and Service Application

The offered harness comes from the Rear Lights and Brake Lights category and is intended for service applications in Porsche vehicles where replacement of a damaged section of the installation near the rear left lamp is necessary. It is particularly useful in situations where the existing harness has suffered mechanical damage, contact corrosion, or insulation abrasion, causing improper lighting operation or error messages in the vehicle system.

It is always advisable to verify compatibility with the specific model version and equipment configuration before selecting the correct part. This ensures the harness can be used as a functional replacement for the factory-installed section of the installation, without the need to interfere with other parts of the electrical system.

Expansion of Service Work and Additional Materials

If you are planning a comprehensive repair or upgrade of the rear lighting area in your Porsche and need other parts from the same group, such as lamp modules, bulb holders, or additional harnesses, check the available parts in the Porsche Rear Lights and Brake Lights category.

When planning more extensive work on your car, including the replacement of wear-and-tear items and electrical components, practical tips on replacement frequency and service cost optimization can be helpful – you can find them in the article TOP 10 Most Frequently Replaced Parts in Your Car.