it hard to trouble shot from here but try this first get some spray silicone and spray it lightly around the plastic parts of the stearing wheel where it rubs when the wheel is turned if this doesn't work they may be right.
Its in the steering wheel
The switch to operate the horn on a 1965 Ford Mustang is located at the center of the steering wheel.
I found it under the steering column.
The camshaft position sensor on a 2001 ford mustang is located on the front of the engine. It is behind the power steering fluid reservoir.
It is located inside the car under the dash, on the firewall, just to the left of the steering column.
under dash left of steering wheel
The flasher is located on the steering column on the right side of the column.
It is located up under the steering column. It sometimes takes a little work getting it out.
In the center of the steering wheel and on the opposite side of the center console.
Diagram for 1978 mustang steering column
$150.00 on a Mustang.
The fuse box on a 2002 Ford Mustang will eather be on the driver side lower dash, under the steering wheel, or under the hood behind the battery.