lights wont come on and switch is new on 1994 Ford F-350

Headlights went out. Is there a relay that i need too replace.

3 answers
What does the dealer say about your issue?
Yes there is a relays under the hood driver side there should be a black box with all of your relays. Look at you owner manual to locate witch one it is.
Also, look very closely at the headlight switch wiring connector. 9 times out of 10 it needs to be replaced when you install a new switch, because of melting or terminal damage.