I have a 1993 240, and my heated mirror relay is behind the switch, and up a few inches. You have to take off the center console panel to see it. Look on this site go down the page a bit & you will see PDF files, pictures of relay locations for different Volvo years, in case yours is different than mine. Also, to all the guys who seemed confused about the power button to the heated mirrors: they work like heated mirrors on any other car, the relay is a 'timer relay' and they are meant to shut off automatically after a certain period of time, so as not to burn out the elements early in your cars life. You all may have figured this out by now, but in case you didn't, well there ya go. The only difference is,most cars share this circut with the rear defroster. This is the 1st car I've seen with separate buttons.