Headlight Switch Cranks Engine??

Put in the new wiring harness, save the old one for the connectors and various colors of wire. I always keep each wire the same color if I do a splice. Solder the splices, if you are sure you have the right wires hooked up. I always check mine before soldering. This can be figured out. Don't be in a hurry. Think about it, ask the forum, and when you're sure you have the correct next step, then proceed. May need help from a local guy that knows these cars. Good luck!