Ray, I'm one of those old guys (62) who built model cars in the 1960's. I returned to the hobby a few years ago, and have learned a ton of good things from this forum. I've used aftermarket parts (photoetched grilles, resin bodies, wired distributors, etc.) that we didn't have back then. I remember using thread for plug wires. My mom had a spool of black carpet thread which worked well. It was thicker than normal thread, and not fuzzy - had some kind of coating on it. the kits are better now, too. Better molding, more detail. I'm enjoying it, and you will too!
Sam