Unknown Hot Wire in Van
Hi, I recently bought a used Chevy Express van from the early 00's. I have not yet installed any of my own electrical. I was taking out some of the ceiling paneling so that I could put in insulation, and I noticed there's a pair of wires coming up from the dash, one black and one red. The black one has been cut, and the copper strands are exposed at the end. The red one goes all the way to the back, up through the ceiling, to some old piece of equipment on the roof that must've been an antenna or something like that.
When I touch the black wire to the vehicle chassis, it sparks. So then I took a multimeter and confirmed there are 12v flowing through the black wire.
The old antenna or whatever it was there's clearly no need for anymore (nor would it work anyway) so I just want to handle this situation as safely as possible as I am in the process of converting the van to live in it. However, the black wire goes down into all of the vehicle's electrical wiring and so it's not really possible for me to find it at the source and disconnect it.
Is it safe to simply cover the copper end of the wire in a bunch of electrical tape, and then essentially leave it up there, hidden behind my future insulation and paneling? Or are there other precautions/steps I should take to handle this as safely as possible?
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