Trailer wiring
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More Turbo
Joined: Jan 2008
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From: in the middle of nowhere
Trailer wiring
Any body have a schematic for these relays? No left turn signal on trailer can't make sure sense off it. Assuming turn signal switch is involved.
96 Powerstroke
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Joined: May 2009
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From: Gilbert, PA
Those 2 relays have Nothing to do with the trailer turn signals
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More Turbo
Joined: Jan 2008
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From: in the middle of nowhere
Hence my confusion then. What are their specific purpose. In the quest for a print, Subford ID'd them as a deciding factor if the truck had the tow harness.
I have no continuity from the fuse to the C149 connector
I have no continuity from the fuse to the C149 connector
Fleet Owner
Joined: Oct 2005
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From: Kentucky
Some great information and photos in this thread: https://www.ford-trucks.com/forums/1...er-wiring.html
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