I have a 1998 Volvo S 70 T5. This is my first Volvo and have been very pleased.

The car did not come with driving/fog lights installed in the bumper. I purchased an aftermarket set of lights and installed the same. Unfortunately, the kit included only the lights. I subsequently discovered a switch was needed and later still that relays were required. My Volvo dealer indicated that three relays were needed, but had no idea where they were to be installed. i bought the relays and as best I can tell, at least 2 of the relays go under the driver's side dash. I have a Haynes manual but it's no help on this problem.

fuses are good

any guidance would be most appreciated.

 

Check this site for a wiring diagram.
http://www.volvotechinfo.com/WD123/