Crane hits power line - GIF

[NortonDommi]

Before one performs electric welding on cars, he should disconnect the battery, we are talking 80 volts welding. Imagine what thousands of volts from power line will do to a vehicle.

I have struck a problem with L.E.D. lights on trucks and trailers as well. I used to just bridge a spike protector across the battery terminals but welding near a L.E.D. light has blown a few so I now also disconnect them at the plug. The newer multivoltage lights don't seem to suffer as bad but why take chances?
Anyone else encountered this?