Klaus,

You are right. The absence of green or red plastic trim around the socket, indicates the absence of a bulb. I just got off the phone of my “Part’s Guy’ at my local Volvo dealership. My 2002 S60 T5 did not come equipped with a bulb to illuminate the “12 Volt” socket, either by the front passenger seats, or in the rear portion of the center console facing the passenger seats. I’m surprised. It is an inconvenience to try to find this socket at night without the aid of a bulb. I guess I should take solace in the fact the “bulb hasn’t burned out and doesn’t have to be replaced”. This absence of a bulb was also true on later models of the S60.

Thank you for the information above.

Hugh