Splice with several cables (branch point)
WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
Select a butt connector large enough to take the cables to be inserted on the same side.
If a single cable is to be inserted on one side of the butt connector it will more than likely have too small an area compared to the opening in the butt connector.
Strip the cable to double length and bend it double.