I have 2020 Expedition King Ranch with the heave duty tow package. I'm getting a left blinker trailer fault when connect to two different trailers through the 7pin connection. Hazards work, right blinker works, running lights work, reverse lights work, left blinker does NOT work. Checked the voltage coming out of the truck side connection and it looks good. Any one know what fuse controls the lights? I checked all the fuses and they look good but might be worth replacing the fuse anyway, but the manual isn't clear on what fuse controls trailer blinkers. Anything else I should look at?
Trailer Fault - 2020 Expedition
- Thread starter Jhesse77
- Start date
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@Jhesse77 welcome to the forum!
Maybe I'm missing something, but why do you think it is your Expedition with the problem and not the trailers left blinker?
Maybe I'm missing something, but why do you think it is your Expedition with the problem and not the trailers left blinker?
Because the problem presents itself when pull my boat and when I pull my travel trailer. I supposed it could be both trailers with the same issue, but seems like that would low probably. Both trailers had the issue when they were purchased brand new.
GlennSullivan
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Try another truck with one or both of your trailers. The Ford factory TBC are very finicky.
Tester from Amazon that test your truck wiring and trailer wiring. Under $20 (even cheaper right now with coupon)
https://www.amazon.com/Aramox-Wirin...13-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9tdGY&psc=1
I am not affiliated with Amazon nor the tester. I do have the tester and wouldn't tow without it.
Welcome to the forum
As an Amazon Associate we earn from qualifying purchases.
GlennSullivan
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That is very interesting. The item depicted has round pins as opposed to the flat blades which is what would be needed. Do they make a flat blade version or would adapters on each end be required?
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No adapters needed it fits
GlennSullivan
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I'm somewhat confused. I don't see how the pictured adapters pins in the Amazon link above (either male or female) fit into any of my vehicles 7 pin round receivers or my trailer plug.
chuck s
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From the Amazon listing. The link and all the photos show 7 round pins (EU - type).
Would be great if there was a US version that could test both the truck AND trailer like this one (which won't work).
chuck s
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My tester only tests the truck. Does yours test the trailer? Never needed to test the trailer myself 'cuz the lights are easy to see and the brakes can be tested with the break-away switch but a combination tester like the European version linked previous would be handy.
-- Chuck
-- Chuck
I see now, will see if I can find what you are looking for
Well my issue is resolved. Turns out it WAS my boat trailer. The left light had the wires reversed when the install was done. I noticed that the left break light was not as bright as bright as the right break light different trucks plugged in. Fix was super easy.
That also means the issue I was observing with my travel trailer is a separate issue, I think that was resolved when I bet the contact a little to ensure proper contact while connect. The travel trailer would cut out intermittently which makes sense that it was a contact issue.
Thank you all for the input.
That also means the issue I was observing with my travel trailer is a separate issue, I think that was resolved when I bet the contact a little to ensure proper contact while connect. The travel trailer would cut out intermittently which makes sense that it was a contact issue.
Thank you all for the input.
GlennSullivan
Full Access Members
Thanks for the update / solution
Exactly, I wish we had more of this.
