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I have no Brake Light, Turn Signal and Reverse Light on Left…

Customer Question
Second opinion] I have...

Second opinion] I have no Brake Light, Turn Signal and Reverse Light on Left Rear. I do have Running Lights and Fuse checks out good. I replaced the Signal Switch on steering column and still no lights.

Mechanic's Assistant: Have you checked the brake fluid? How's the level and when was it last changed?

No I have not. But, what would the Brake Fluid have to due with those lights on left side only?

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

2015 Ford F-350 Super Crew 4X4 Lariat

Mechanic's Assistant: Are you fixing your F350 yourself? What have you tried so far?

I am doing this myself. I found a short by the spare tire that was affecting the running lights and since I repaired it, I now have running lights and the F30 fuse does not blow now.

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

I originally had the left rear turn signal and brake light not working. I checked bulb and it looked blown. When I replaced it with a LED bulb it worked for a week. Then the brake lights, running lights and turn signals stopped working on both sides. I then checked fuses and found F30 was blown and each time I tried a new fuse it blew immediately. After finding and repairing shorted wires and replacing signal switch on steering column, I now have all fuses good, but no left rear turn signal, left rear brake and left reverse light on truck. If I hook up my 5th wheel trailer all of the lights on the trailer work fine. While the left rear stillhas the same problems.

Submitted: 10 days ago.Category: Ford
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Answered in 4 hours by:
7/11/2018
Ford Mechanic: Chris (aka- Moose), Technician replied 10 days ago
Chris (aka- Moose)
Chris (aka- Moose), Technician
Category: Ford
Satisfied Customers: 52,678
Experience: 16 years experience
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Since the trailer works, the BCM outputs are working, so there is still a wiring issue.

Apply the brakes and see if you get power on the gray/brown wire in this image https://www.dropbox.com/s/9rmlmzz4duv5gdw/465.png?dl=0

You now will see a rating scale a row of yellow stars from bad to excellent, because I have posted my 1st full/partial answer. When you rate I get a portion of the deposit you made, no rating means you still paid, but I earn nothing. My goal is understanding your question, and addressing it in full detail. In return, receiving a 5-star rating. Rating does not close the post or stop the conversation. Please keep in contact and reply as much as needed. Thanks, Chris

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Ford Mechanic: Chris (aka- Moose), Technician replied 5 days ago

Hello, Chris here again,

I am checking in to make sure you got everything you expected from my INFO REQUEST / ANSWER in return for the fees you have already paid. I want those fees to benefit you and me. If any part of my response is unclear, please let me know. It’s my goal to deliver excellent 5-star service you're pleased with, so if I've done that, please don't forget to give me a 5-star rating.

Thanks, Chris

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