Parking lights not working

We need to check fuse #4 and the park light relay as well here are 2 guides and the fuse and relay location in the diagrams below.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the diagrams (Below). Let us know what happens and please upload pictures or videos of the problem.

Hello,

There is a fuse number 7 int he PDC that has blown. here is a guide to help you check it:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Here are some wiring diagram so you check test for power as well:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Please let us know what you find.

Cheers, Ken

Fix the wires for the headlight first. Then check fuses under hood as well as in car.

If your truck has been in a wreck then you have to look for wire stripped off of the insulation and or hitting the body/frame someplace causing the problem. Tape will work but they really need to be seen and fixed correctly. Just make sure all the abare spots are repaired. But also because of the wreck there is a good possibility that the central timer module was damaged and is causing at least some of your problem. You should get it scanned to see if it's screwed up or not because you may on ly fix it by replacing the module.

Depends on how that light is acting. It can be very misleading if you switch it on and off by yourself, then run back to look. A bad ground terminal will cause that bulb to appear to work for the signal because current finds an alternate path to ground through the bulb on the other side that is connected to it through the signal switch. You really need to watch how both sides act while a helper switches between brake, signal, and tail lights.

Fuse #14 (15amp) under the dash. Here is a guide to help you test for power and the fuse location below with the wiring diagrams so you can see how the system works.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.

Welcome to 2CarPros.

The only thing I see that correlates with both the back up lights and tail light on the left side are two splices in the wiring and ground. However, I question if the ground is bad if the turn signal and brake light work.

Take a look at pictures 1 and 2. I highlighted where the wiring splices together and where they both ground. What I need you to do is this. If you follow the wiring from the tail light assembly back about 3 feet, there should be a connector. At that connector, I need you to check if there is power at the violet/black wire going to the back up lights. If you use a test light, confirm that you have a good ground.

Next, at the light socket, you need to confirm there is continuity to ground via the black wire in the back up light.

I am only focusing on the back up light at this point. It is a less complex system and I feel if we find the problem with that circuit (if it is power or a ground issue) we will also find the problem with the tail light.

At this point, if I had to guess, I would say it is a ground issue at one of the splices. The circuits receive power from two different places, so it would be unlikely that is the issue.

Here are a few links you may find helpful when checking:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring

Note: On the schematics, the letter (S) refers to a splice and (G) to ground. You will see how the two circuits' grounds are tied spliced together.

If you have any questions or need guidance, please let me know. Also, let me know what you find.

Take care,
Joe

Check to see if there is power to the light sockets. Many times the socket itself will go bad. Also, check the wiring under the bed for damage or bad grounds.

That will do it. Glad you found it.