I did a little math and made an inaccurate, but ballpark assumption. He said their harness was 1.6 km too long (1 mile) and that it cost them 70 pounds in extr

I did a little math and made an inaccurate, but ballpark assumption. He said their harness was 1.6 km too long (1 mile) and that it cost them 70 pounds in extra weight. I assumed that the extra harness used 14 gauge copper wire (pretty common automotive gauge) and based on a weight of 11.7 lbs/MFT (5.3 kg/304.8m) where MFT is 1000 feet. This gives an excess harness weight of 62 lbs (his number was 70 lbs). It is likely that the actual excess harness is a mix of wire gauges since some of it would be battery power distribution using a smaller gauge (larger diameter) and others would be accessory power using a larger gauge (smaller diameter). I have a Ford Explorer engine harness a few feet away from me right now. That part of the vehicle harness weighs under 20 pounds in the factory box with the pigtail connectors. There are other harnesses on the vehicle but I would be surprised to find that the entire vehicle harness for that model weighed more than 60 pounds. These electric vehicles are using a lot of copper. I have no idea how long the harness wire is but a mile seems like it could be an exaggeration. The car is only 15.5 feet long. That's 340 extra wires that run the length of the vehicle front to back if there is a mile of excess harness.