Thanks to all who replied to my question as to where to locate the od relay. It was actually hiding as the radio had been replaced and it was difficult to find. Anyway, I replaced the relay, put everything back together again and drove my Volvo for about 15 minutes and the light on the dash came back on. I have rechecked everything including the grounds. Nothing seems to be shorting out as this should kick the fuse. Puzzling and frustrating that I thought I had the problem solved. What's next? Solenoid problems or what? Thanks in advance.