High-Mounted Stop Lamp (S60/S80)
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2009 Volvo S60, 2008 Volvo S60, 2007 Volvo S60, 2006 Volvo S60, and 2005 Volvo S60. However, it is still accessible from the selected car via links, so may be relevant.
When the stop lamp switch (3/9) is closed, a signal is transmitted to the central electronic module (CEM) (4/56). The high mounted stop lamp (10/19) is supplied with power directly from the central electronic module (CEM). The central electronic module (CEM) supplies power for as long as the stop lamp switch is closed.