Hello,
This is the problem I'm having on my 1996 F350 Deisel. With the headlight switch in the park light position, the park lights/tail lights come on. When the switch is pooled all the way out for the headlights, the park lights/tail lights turn off.
Left and Right turn flashers work. Hazard flashers work. Brake lights work. I have replaced the headlight switch but this did not correct the problem.
Can anyone help?
Thank you.

 

all you need is the ground wires redone welcome to the sight

 

Thank you for the welcome.
Do I need to replace the ground?
Do I need to clean the ground?
Is there more than one ground?
What are the locations of the ground?

 

Shared grounds for heads/stop/park/tail. Multiple grounds as well, chance you might loose L/R together, doubt it. S/B,, ground left on the inner core support close to the fender area, right, on the inner fender area forward..