Steering Wheel Wiring Harness, Tiptronic without Multifunction. Porsche 997.1 / 987 Boxster / Cayman  ›  99761267402

Steering Wheel Wiring Harness - Tiptronic without Multifunction

The Steering Wheel Wiring Harness is a replacement electrical loom designed for Porsche 997.1 and 987 Boxster/Cayman models equipped with a Tiptronic steering wheel without multifunction controls.

Fits:

• Porsche Boxster 987 2.7L 2005-08/08
• Porsche Boxster 987 S 3.2/3.4L 2005-08/08
• Porsche 997 MK1 Carrera 2 3.6L 2005-08
• 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
• Porsche 997 MK1 TURBO 2007-09
• Porsche 997 MK1 GT2 2007-09
• Porsche Cayman 2.7L 987C 2006-08
• Porsche Cayman S 3.4L 987C 2005-08

Diagram Ref No 27 

This harness provides the necessary electrical connections within the steering wheel assembly, helping maintain reliable operation of the relevant steering wheel functions.

What Does It Do?

The wiring harness connects the relevant steering wheel electrical components to the vehicle's electrical system, including the Tiptronic gear selection controls where fitted.

Why Does It Fail?

Common causes include:

• Age-related wiring deterioration
• Damaged or loose electrical connectors
• Broken wires from repeated movement
• Corrosion or moisture ingress
• Damage during steering wheel removal

When Should It Be Replaced?

Replace the harness if wiring or connectors are damaged, Tiptronic steering wheel controls become intermittent, or electrical faults are traced to the steering wheel loom.

Checks & Diagnosis

Inspect the wiring and connectors for damage, corrosion or loose connections. Check for relevant fault codes and confirm the harness is responsible before replacement.

Confirm compatibility using the vehicle VIN and original steering wheel specification.

Installation Notes

Disconnect the battery and follow Porsche workshop procedures before working on the steering wheel assembly. Airbag components require careful handling.

Ensure all electrical connectors are correctly seated and the wiring is routed without being pinched or strained.

Porsche 997 & 987 Steering Wheel Wiring Harnesses

The Porsche 997.1 and 987 Tiptronic steering wheel assemblies rely on correctly functioning electrical connections for their associated controls.

A damaged wiring harness can cause intermittent operation or electrical faults, making replacement necessary during steering wheel repairs.

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