You can make your own, the connectors, cable, relay, fuse etc are all available from local carshops or from
Vehicle Wiring Products Ltd. Suppliers of auto electrical parts.. Total cost around £15.
Obviously better if you can solder, as soldered joints are better than crimped.
What exactly do you want to do? Driving lights wired so they come on with main beam, off with dip, and controlled so YOU choose if they are used or not, via the foglight switch?
What MY car?