1998 Ford F-150 Head lights wond come on

Hello !

Start checking the fuses (under the dashboard) if good let us know to continue with the troubleshooting.

Good Luck!

Hello !

Your truck has autolamps? (Day on lights and automatic night lights)

Fog lamps?

Its not working on low and High beams?

Be sure that you checked all the fuses1

There`s three fuses for the headlights one 30 Amps on the power distribution center (under the hood with the main fuses and relays) and one 20 for the low beam and one 30 amp for the high beam.

The wiring its a little bit complicated because ford uses a daytime running lights controller and a multifunction switch.

You have to have some electrical knowledge to read the schematics that`s why we are going to start with the basic stuff.

Let me know.

OK still using a multifunction switch and three fuses (the main its on the power distribution center under the hood on the relay box) check that too.

High and low are down?

Both. High beam and low beam are not working?

The lights are controlled by two switches and the High/Low Switch, if everything else checks good then your next step its check the switches.

Let me know on the question.

Hello !

I would start checking the main light switch and then the other two.

I sent you the complete schematic of the wiring of your truck to your email.

Let me know if that solve your problem and good Luck!