So, old, Oxidized copper wire works as well as new, clean copper wire?
I generally toss out copper wire if it is brown and tarnished looking
under the insulation.
It has been a long time since I took electronics classes, though.
>
> That said, a relay won't make the horn louder or lights brighter
> unless the system was inadequately designed from the outset. Old
> wire doesn't have more resistance than new wire, and it doesn't
> wear out with time, the insulation is just more flexible. Nor
> does a fuse wear with time unless it is being stressed.
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