U have to do some wire splicing. When installing, try to splice the side makrer light with the fog light wires and then see what happens. The lights should then turn on with the parking lights. I did this with my Honda and it worked. It may or may not work for you. Just wait for more posts and see what others have to say before you go and do my idea and it doesn't work.
you could do that or splice them into your low beams.. also you could still use the switch but also splice it to your low beams so you won't forget to turn off the fogs.. its real easy getting into the firewall..
LNK "you only need something when you know it exists..then it becomes a want"
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