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I just removed my flatbed and cut the wires going to the flatbed for the lighting and the trailer/gooseneck.
I've looked online and found conflicting diagrams on what the wires are for.
I have a 2017 F550 Cab Chassis.
I think:
ORANGE is constant hot?
BLUE something to do with the brake controller
BLUE/GREY no idea, break controller stuff?
YELLOW left turn signal
BROWN running lights
GREEN right turn signal
WHITE ground
Looking at my wiring manual I found the following color code consistent across all models:
If your truck has the trailer brake control module -
Blue - Trailer brakes
Orange - Trailer battery charge
Green - Right Stop / Turn Signal
Yellow - Left Stop / Turn Signal
Brown - Parking Lights
White - Ground
The only Blue / Grey wire referenced anywhere is for a 5th wheel or a trailer / camper adapter. In this instance it is a ground.
All of the various diagrams have a Blue / Brown wire for Reverse.
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