It always irritated me that my saloon (and most cars in the UK) only had a drivers side fog light. So I did some investigation on my semi-mux car, and it was missing the pin on the passenger side block connector. So I went to the scrappy and cut off a multi plug from another saloon, removed the pin from that and inserted it into my passenger side block. Cut the feed for the original fog light, spliced in the new wire, added some heatshrink and we have twin rear fogs! Much better I think:
