It doesn't show causality because their decision of when to do it wasn't random (so maybe when in the mood to go straight to wrapping wires they were also in the mood to turn the key slightly more firmly, or...), and also because there's no way of knowing if wrapping the wires was in any way relevant - maybe the vehicle actually just needed X minutes between unlocking and starting, and wrapping wires was a way to spend that time without using a timer, or maybe... who knows what other maybes!

And sure enough, their story concludes with discovering that there was no causality from the wire wrapping at all. It was just about killing time.