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No trailer lights when I plug in My fifth wheel lights

Customer Question
No trailer lights when...

No trailer lights when I plug in My fifth wheel lights worked and then quit!! Think I blew a fuse and can't find my manual! I think I lost power to recept on bumper

Mechanic's Assistant: Is the power loss consistent, or does it fluctuate?

Splid!! No lights anywhere on fith wheel Truck lights are fine all around.

Mechanic's Assistant: What is the model/year of your Ford?

2012 f350 super duty 6.7 diesel 4 door

Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far?

Yes nothing need to find fuse number or numbers I don't have a meter with me but if I pull fuse I can swap

Submitted: 10 months ago.Category: Ford
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Answered in 9 minutes by:
9/29/2017
Ford Mechanic: Randall C, ASE MasterTechnician replied 10 months ago
Randall C
Randall C, ASE MasterTechnician
Category: Ford
Satisfied Customers: 13,440
Experience: 35 years ASE Master Tech, Diagnostic , Electrical Specialist
Verified

Hello, I am Randall. I am working on your question and will return shortly. Thanks

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Customer reply replied 10 months ago
OK
Customer reply replied 10 months ago
no thanks if this doesn't work i will
Ford Mechanic: Randall C, ASE MasterTechnician replied 10 months ago

I will agree I think a fuse blew. I doubt the relay. You have 3 fuses in play you have to check each of them, My pics may not match 100% but fuse numbers are correct. You are looking for fuse #90 a 25 amp fuse in the under hood fuse box,

Then you are looking for 2 fuses in the BCM fuse box., It is located behind the right side kick panel. passenger side kick panel. Fuses are #30 and #40 . 30 = 15 amp and 40 = 10 amp. They will be marked on the inside fuse panel

here are pics of both fuse boxes, The one shows the fuse #90 in the under hood box

Please rate my service I have provided today. Thanks

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Customer reply replied 10 months ago
Thank you I ll be back if it doesn't work
Ford Mechanic: Randall C, ASE MasterTechnician replied 10 months ago

ok

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Ford Mechanic: Randall C, ASE MasterTechnician replied 10 months ago

there is also in the battery fuse box a trailer tow relay parking light, It is listed with an arrow pointing to it in the diagram I sent

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Ford Mechanic: Randall C, ASE MasterTechnician replied 10 months ago

swap it if need, other relays are near same near it

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Ford Mechanic: Randall C, ASE MasterTechnician replied 10 months ago

Hello, how did you make out?

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Randall C
Randall C
Randall C, ASE MasterTechnician
Category: Ford
Satisfied Customers: 13,440
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Experience: 35 years ASE Master Tech, Diagnostic , Electrical Specialist

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