Wiring Harness / Cables

Battery Ground Cable, RHD (Right Hand Drive).

This Porsche Battery Ground Cable, RHD is a genuine OEM electrical cable designed specifically for right-hand drive models only. This heavy-duty cable connects the battery’s negative terminal to the chassis, providing the essential earth/ground connection that keeps your Porsche’s electrical system stable and reliable.

Fits:

• Porsche Boxster 986 2.5L 1997-99
• Porsche Boxster 986 2.7L 1999-02
• Porsche Boxster S 986 3.2L 1999-02
• Porsche Boxster 986 2.7L 2003-04
• Porsche Boxster S 986 3.2L 2003-04
• Porsche Boxster 987 2.7L 2005 -08/08
• Porsche Boxster 987 S 3.2/3.4L 2005-08/08
• Porsche Boxster 987 MKII 2.9L 2009-2012
• Porsche Boxster S 987 MKII 3.4L 2009-2012
• Porsche 996 C2 3.4L 1997-08/01
• Porsche 996 C4 3.4L 1997-08/01
• Porsche 996 C2 3.6L 09/01-2005
• Porsche 996 C4 3.6L 09/01-2005
• Porsche 996 C4S 3.6L 09/01-2005
• Porsche 996 TURBO 2000-05
• Porsche 996 GT2 2001-05
• Porsche 996 GT3 MKI 1999-02
• Porsche 996 GT3 MKII 2003>>
• Porsche 997 Carrera 2 3.6L 2005-08
• Porsche 997 Carrera 2S 3.8L 2005-08
• Porsche 997 Carrera 4 3.6L 2005-08
• Porsche 997 Carrera 4S 3.8L 2005-08
• Porsche 997 TURBO 2007-09
• Porsche 997 GT3 2007-09
• Porsche 997 GT2 2007-09
• Porsche 997 MKII Carrera C2 3.6L 2009-12
• Porsche 997 MKII Carrera C4 3.6L 2009-12
• Porsche 997 MKII Carrera C2S 3.8L 2009-12
• Porsche 997 MKII Carrera C4S 3.8L 2009-12
• Porsche 997 MKII GT3 2010-11
• Porsche 997 MKII Turbo 2010-13
• Porsche 997 MKII GT2 RS 2011-13
• Porsche Cayman 2.7L 987C 2006-08
• Porsche Cayman S 3.4L 987C 2005-08
• Porsche Cayman 2.9L 987C MKII 2009-12
• Porsche Cayman S / R 3.4L 987C MKII 2009-12

What This Product Does:
The battery ground cable is a heavy-duty electrical cable that connects the negative terminal of the battery to the chassis/engine ground. On right-hand drive (RHD) Porsche models, it is designed with the correct length and routing for proper fitment.

Functions:

• Provides the primary earth/ground connection for the vehicle’s electrical system.
  
• Ensures stable current flow between the battery, starter, alternator, and electronic modules.
• Helps deliver consistent starting power and prevents voltage drops.
• Protects sensitive electronic components by maintaining proper grounding.

Symptoms Of A Faulty Battery Ground Cable:

• Hard starting or intermittent no-start condition.
  
• Electrical faults such as flickering lights or warning messages.
  
• Battery not charging properly due to poor grounding.
  
• Slow cranking from the starter motor.
  
• Visible corrosion or fraying on the cable or terminals.
  
  

Why Replacement Matters:
The ground cable is a critical link in the electrical system. A poor connection can cause starting issues, electrical malfunctions, or even damage to control modules.
Replacing it with a genuine OEM cable ensures:

• Correct fitment for RHD (Right Hand Drive) Porsche models.
• Reliable starting and charging performance.
• Long-term corrosion resistance and durability.
• Protection for sensitive electronics.

Diagram Ref No 1

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

99761109100

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Cable power distributor.

Connection cable, Central extraction - Connection point.

Fits:
For LHD cars only
Porsche 986 Boxster / Boxster S 2001>> 
F 98-1S601 372>>
F 98-1U601 927>>
F 98-1S641 227>>
F 98-1U642 149>>

Click 'Zoom in' for large parts diagram.
Diagram ref no 15


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

98661209103

The product you are viewing cross references to these numbers