I can go back to 1993, not 1992. I don’t think there is a difference though. The second row relay, second from the left, color unknown is the front fog light relay and is not part of the head light circuit. The relay to the right of that is the head light flasher relay for flashing on the hi-beams. The first row, second from the left is the head light K relay.

From a post a week ago where a person had the same problem:
This is where the $35.00 Volvo wiring diagrams book and a $5.00 VOM pays for itself. First double check the low beam filaments on the 9004 lamps or buy a new one to check. Tracing the circuit, I would first give an equal look at the red bulb malfunction relay and the head light relay which should be marked with a K in the front row of relays. After that, the head light switch, the lever switch on the steering column, and the ignition switch.