I know this is a really old thread. Just installed fog lights, used the stock wiring, added the relay to the fuse block, connected the switch. I turn on the switch and I can hear the relay click but no lights. Headlights are on. I checked the fuse. Removed it and the relay doesn't click. Put the fuse back in and the relay clicks. I haven't checked the bulbs yet and have not used a multi meter on the connector ends at the lights but wanted to see if there was something I was missing.