This might be a dumb question, but I’m installing aftermarket fog lights on my 2017 WRX. The lights come on when the low beams do with the use of a relay instead of a switch. The wiring harness has the connectors for the fog lights, low beams, relay, and a fuse. The fuse has a secondary lead that I’m not sure where it connects. It gets power from the low beams so I would think it wouldn’t go to the battery, but would it go to ground? Aren’t the lights already grounded?