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1997 - 2003 Ford F150 General discussion on the Ford 1997 - 2003 F150 truck.

Problem with turn signal

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Old Apr 4, 2018 | 04:12 PM
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tserio's Avatar
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Default Problem with turn signal

When turning on either the right or left signal, both of the tail lights flash, like the emergency lights are on. What could be the problem?
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Old Apr 4, 2018 | 06:34 PM
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Do you have trailer wiring?
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Old Apr 5, 2018 | 01:24 PM
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Sounds like the two somehow got spliced together somewhere. The question of a towing harness is a good question. Maybe something with that is causing this. If not, I'd suggest tracking the wiring from the back.

Last edited by That1GuyTim; Apr 5, 2018 at 01:27 PM.
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Old Apr 5, 2018 | 04:27 PM
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Mine started doing that. Had to replace the turning signal switch.
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