2013 F-150 Trailer Lights Not Working: Fuse Issues?

Technical Issues
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I’ve been having some serious trouble with the trailer lights on my 2013 Ford F-150. It seems like no matter what I do, they just won’t light up. I suspect it might be a fuse issue because everything was working fine until I hitched up my trailer the other day.

Here’s what I’ve done so far:

  • Checked the trailer lights themselves: They seem to be in good condition.
  • Inspected the wiring: No visible damage that I can see.
  • Tested the truck’s tow package wiring without the trailer connected.

Despite all this, the lights remain dead. I’m pretty sure I’ve narrowed it down to the fuses, but I can’t find the fuse box layout that specifically indicates which fuse is for the trailer lights.

Questions:

  1. Where exactly is the fuse for the trailer lights on a 2013 F-150? I’ve looked in the owner’s manual, but it doesn’t specify clearly.
  2. Are there any common wiring problems I should check for? Any tips on where to look would be super helpful.
  3. If it is the fuse, what’s the best way to replace it without screwing anything up?

I appreciate any advice you guys can share to help me get this figured out. I really need my trailer lights working for hauling.

Thanks in advance for your help!

1 Like
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Hey everyone! I’m having trouble with my 2013 F-150 trailer lights not working. Could it be the fuses? Where can I find them?

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You can check the fuse box under the hood! There’s a diagram on the fuse cover that shows which fuses control the trailer lights.

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I found a great diagram online! It really helped pinpoint the specific fuses for the trailer lights. Just search for ‘2013 F-150 fuse diagram’ and you should find it easily.

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Thanks, ricewayne! I’ll give it a try. Hopefully, it’s just a blown fuse!

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Also, don’t forget to check the fuse box inside the cabin! There are fuses in there that might also affect the trailer lights. Just in case!

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Good point, ryan32! I didn’t think about that. I’ll check both locations thoroughly!

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Can anyone share photos of the fuse boxes? It would help visual learners like me to locate them without any hassle!

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Yeah, photos would be super helpful! If I find some, I’ll post them here. I think the fuses are labeled pretty clearly, though.

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True, but sometimes those labels can be confusing! A picture would be great.

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Just don’t mix up the trailer light fuses with the others! Otherwise, you might end up fixing something that isn’t broken, like I did once.

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Haha, I can relate! I swapped out a couple fuses just for them to work fine—what a waste of time!

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At least you learned something from it! Always check the wire connections too; it might not just be fuses causing the problem.

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Thanks for the tips, everyone! I’ll check the fuses and wires. Fingers crossed I can get the trailer lights working again soon!

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I had a similar issue with my 2013 F-150! Usually when trailer lights are out, it’s due to a blown fuse. Check your fuse box for any signs of damage or burnout.

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I agree! Also, be sure to check the trailer plug connections. Sometimes it’s just a loose wire causing all the fuss.

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I’ve found that blown fuses often show a burnt mark or are physically broken. If the fuse is fine, check the wiring harness next! It can be tricky.

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Great points! If you’re experiencing flickering lights, it can indicate a bad ground connection rather than a blown fuse.

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That’s a good tip! How can you identify if the ground needs fixing?

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To check the ground, look for corrosion or loose connections at the grounding point. You might need to clean or tighten the screws.