Parking lights will not turn off

2001 FORD F-150
183,799 MILES • 5.4L • V8 • 4WD • AUTOMATIC
Avatar
ARMYVET1968
  • MEMBER
  • 3 POSTS
After pulling switch completely out, lights still will not go off. Truck has automatic lights, key-less entry, also it is a super crew. Started yesterday, disconnected battery, connected it back and still the same problem. park lights stay on no matter what position the switch is in.
Nov 7, 2017 at 4:35 AM
Advertisement
Avatar
WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
There are no modules in the circuit and the power comes from the switch so unless you have some type of aftermarket alarm or something. the only way they can get power without the switch being plugged in is through a shorted wire somewhere that would be shorted to a different power source.
Nov 7, 2017 at 3:03 PM
Avatar
ARMYVET1968
  • MEMBER
  • 3 POSTS
I can disconnect the battery, they will stay off for about five minutes then they come right back on, as far as I know there is not an aftermarket alarm system. I bought the truck used, all I have is the original key fob. When I disconnected the switch they stayed on.
Nov 7, 2017 at 4:36 PM
Avatar
WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
Here is the wiring diagram so you can track it down:
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Nov 7, 2017 at 4:43 PM
Avatar
ARMYVET1968
  • MEMBER
  • 3 POSTS
Let me ask you this, could just a bad ground cause it?
Nov 7, 2017 at 4:47 PM
Avatar
WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
No, they would not come on at all without a ground.
Nov 7, 2017 at 4:49 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.