Sky high wire just isn't that good. There is moisture in vehicles as the temps change and humidity and stuff lol. Swear to god I have never seen wire corrode like sky high wire does. Almost everyone I know runs eb welding wire now for power and ground... And for speaker wire run everyone has different stuff but I do know no ones has sky high anymore because it corroded on them. And not just the ends of the wire, but all the way through the whole wire/jacket. Let me see if I have any pictures saved..