Making the Big Engine Wire

To make the wire, create a line that goes from the front round the the side. Turn the corner vertex into a Bezier corner and curve the edges. Once that is done, enabel the line in viewport and render and increase its radius until it is about the size as in the images below. Turn the line into an editiable poly and chamfer the corner and add a turbosmooth to it.

The final part is to make the part that holds the wire. To do this, simply create a cylinder and place it where the wire meets the engine parts. Add 2 loops and extrude them (as seen in image 3) inset the front and back faces so that they fit around the wire then bridge them together.