Just bought the factory foglights for my car on ebay and I was wondering if it's better to connect them to a switch or tap into the parking lights? I would like to just tap in my parking lights so I dont have to worry about running wiring through the firewall and under the dash. I dont care that they would come on with the parking lights but if that's not a good thing to do then I'll use a switch.

 

Either way... Use a relay.