F-150 Extended Cab wire ferrule

I kept getting layer separation at the crucial narrowing point. Also, the cavity was slightly smaller than my cable sheath. I printed these laying flat to make the layers perpendicular to the narrow section, hence the squared backing. It also increased the strength a little.

Note, I modified these from the model by hybris1 but there was a mix-up in unit conversions. You'll need to scale by 0.39 (cm to inch) to get the correct size.