fogs on with Highbeam mod?

In an old subaru I had there was a way to mod the switch so the fog lights would stay on once my highbeams came on... I was wondering if anyone figured out how to do this on the gen 4 explorer

 

[MustangP51]

http://www.explorerforum.com/forums/showthread.php?t=368916

Post # 3 is how I did it.

 

[xjsport95]

Thanks