Trailer not registered as connected
Have a 2015 F350 towing a fifth wheel When I used to connect cord to the truck the dash would display "trailer connected" and engage brakes Now that alert is not displayed and brakes do not enga...
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I just went through this with my F250. Turned out it was a bare brake wire INSIDE the trailer axle. I pulled the wires out and ran new ones in tygon tubing on the outside of the axles. No more issues.
