Low Beams dead, Hi Beam Fine?

Awesome guys. Yes, one of the first things I did when I got this Dart was to install relays on the headlights, I was told (by this forum) that this would give brighter lights.
So I did yank the carpet back, removed the switch, hooked it up to my old multimeter and tested continuity on the switch...all fine.
Then tested for volts on the plug.... all good.
Then hooked it back up and now it works. There was no corrosion or rust. Actually the switch looks really good, it is about 6 years old.
So there you have it. Low beams are back and ready to take on the night. Thanks for the help.