Ford Repair Questions? Ask a Mechanic for Answers ASAP
Sorry for all the questions but it will help to know if the fuse only blows when turn signal switch is in left or right position when you have problem?
Also do you have a trailer plug on the back of the truck?
First thing to check is the trailer plug, that is where most problem come from.
If the plug is good you are going to have to check the brake light switch and turn switch . Then trace back through the wire harness.