Anyone know what Blue and White wires go to?

After installing a new horn relay, I noticed these two plugs that go nowhere. The wiring diagrams I've seen online don't make any reference to any blue & white wires. These are located behind the driver side kick panel. The car is a 1973 Plymouth Duster, Slant Six, Auto. 20200802_170027.jpg 20200802_170020.jpg