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I have a 2014 f350 diesel, hooked up led reverse lights now…

Customer Question
I have a 2014 f350...
I have a 2014 f350 diesel, hooked up led reverse lights now when I shift into reverse they come one for one second then shut off then I try again and nothing, if I turn truck off and then back on again and try to shift into reverse they come on for 1 second again then shut off, fuse is good..
Submitted: 2 years ago.Category: Ford
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Answered in 7 minutes by:
1/31/2016
Ford Mechanic: EricFromCT, Ford Technician replied 2 years ago
EricFromCT
EricFromCT, Ford Technician
Category: Ford
Satisfied Customers: 4,780
Experience: 20 years dealership exp., ASE A1-A9 L1 L2, Ford Lincoln Mercury Senior Master, Diesel Certified
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Hi. Are the factory lights remaining on? or are they shutting off as well?

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Customer reply replied 2 years ago
No they are shutting off as well
Ford Mechanic: EricFromCT, Ford Technician replied 2 years ago

If you disconnect your lights the factory ones work again?

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Customer reply replied 2 years ago
No I tried that also, do u think it is a relay?
Ford Mechanic: EricFromCT, Ford Technician replied 2 years ago

The reverse lamp relay is only for the trailer tow. WHen you put your truck in reverse the interior fuse panel (smart junction box) sends power to the relay and tees off and goes to the reverse lamps in the tail lamps.

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Ford Mechanic: EricFromCT, Ford Technician replied 2 years ago

You may have done something that messed up the smart junction box. But it does have internal circuit protection. You can try disconnecting and reconnecting the battery. If the box has tripped a circuit breaker it will reset.

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Customer reply replied 2 years ago
Ok I will try that
Ford Mechanic: EricFromCT, Ford Technician replied 2 years ago

DO you have a trailer plugged in that could be shorting it in reverse?

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Customer reply replied 2 years ago
No there's no trailer or anything hooked up
Ford Mechanic: EricFromCT, Ford Technician replied 2 years ago

Try doing the battery then. And do you know what color wires and where they were that you hooked up to?

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Customer reply replied 2 years ago
I just disconnected the battery and then hooked it back up and still just comes on for 1 second then shuts off
Ford Mechanic: EricFromCT, Ford Technician replied 2 years ago

Did you replace the factory bulbs in the lens' with an aftermarket bulb?

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Customer reply replied 2 years ago
No the factory tail light have the factory bulbs and I only spliced into the hot wire to the led lights under the bumper and then grounded them
Customer reply replied 2 years ago
I figured it out never mind. I appreciate your help anyway. It was a loose ground wire..
Ford Mechanic: EricFromCT, Ford Technician replied 2 years ago

You didnt disturb the ground on the left rear corner of the frame rail?

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Ford Mechanic: EricFromCT, Ford Technician replied 2 years ago

Oh ok. Thanks for letting me assist you. Please rate my service and have a good evening. Thank you.

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Ford Mechanic: EricFromCT, Ford Technician replied 2 years ago

Thank you for using Just Answer. Please rate the service provided and have a great day.

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