How to use:

Use the tool in the same way as the sweep- or pipe-tool in Autodesk® Fusion 360™. 

First, draw a curve:
Then go to SOLID / CREATE / Create Sketch and select a Plane (screen-center)

Now you are in Sketch-Mode. Go to CREATE / line and draw a curve by arcs and lines or use the spline tool.
Start the Script by typing 'SHIFT S' and selecting Cord_Coil_Rope and Run.

The tool offers three modes:
Coil-Mode draws one wire around your curve, Cord-Mode two and Rope-Mode four wires. 
'Thickness' is the strength of each wire and 'Broadness' is the Strength of the whole Coil/Rope. 
'Rotations' describe how often each wire spirals around your curve. 

Do your selections and press OK.

Finish Sketch (left side of the Menu)

How to install:
The installer that ran when you downloaded this app/plug-in from Autodesk App Store will start installing the app/plug-in. Or, simply double-click the downloaded installer to install the app/plugin.
Open Fusion 360 and go to TOOLS menu
Go to ADD-INS->'Script and Add-ins' and choose the green + on the left of MySkrips.
Start the script by typing 'SHIFT S' and selecting Cord_Coil_Rope and Run.

To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer, and select the "Uninstall" button. Or, you can uninstall it from 'Control Panel/Programs and Features' (Windows 7/8.1/10), just as you would uninstall any other application from your system.

Splines do not accept as many coil rotations as arcs.