Headlights keep flashing on and off?

[94forddiesel]

Just my headlights will flash on and off then i have to turn them off for a min and turn them back on and its fine for a few minutes sometimes longer then others. Does anyone know what is causeing this or had this happen to them? And it is just the headlights flashing the tail lights and parking lights are fine.

Thank you

[cdnsarguy]

I think there is a relay that does that when there is a problem....... How many lights do you have hooked up to high beams......

OK checking my schematic for 94 the headlights lights are on the PCM power relay. It powers the multi function switch and the main light switch. Check your light switch and connector for shorting out and burned.

[trampsdieseltruck]

check the wires going to the headlight switch.i had the same problem,turned out that one of the wires at the harness at the headlight switch had come loose

[94forddiesel]

Thank you i will go try those things now and see what i come up with.

-Shawn

[sevennightclub]

Same problem here on my 90 f350 =( gets worse when i pull my trailer. I have read about wiring a relay but can not find out how to do that. Can someone please shed a lil light lol

[cdnsarguy]

Too many lights or a bad switch or connector........

[ARIZHNT]

Check the electrical connector on the headlight switch. Mine was burnt, I ended up replacing both the connector and the headlight switch-both available thru Standard.
Common problem from what I have found.

[RWF350]

[Same problem here on my 90 f350 =( gets worse when i pull my trailer. I have read about wiring a relay but can not find out how to do that. Can someone please shed a lil light lol[/quote] Look at LMC, they have a plug and play harness for going to the relays. I think it's about $30. By the time you buy wire, relays, connectors etc, it's not that much more than building a harness.