2013 F-150. Turn signals work correctly for turns, however they do not continuously light when headlight switch is on. Don’t know if it is a wiring issue or something else. Any help would be greatly appreciated.

 

See if you can explain that better.... "Turn signals" are never supposed to be continuously lit.

 

They are technically the parking lights. They were lit previously when the headlights were on. When turn signal is activated, the one would blink and the other would stay solid.

 

The parking lamps and the turn signals are two separate filaments in the same bulb. The terms are not interchangeable as each has a specific meaning. Only the turn signal filament is supposed to light when the signals or flashers are activated. The parking lamp filament should be on any time the headlights or parking lamps are activated.

So what does and doesn't work? Parking lamps inoperative? Which one(s)?