Ok. So a '74 with points dizz received switched power to the coil via a resistor wire which steps the voltage down slightly to protect the points and the coil while the engine is running. This wire in unmodified form looks different from the rest of your electrical wires, primarily in that it was encased in a special cloth like sheath for the length of the wire. The other notable thing about this wire is the length itself, being 72 inches. That length is how the wire could achieve a resistance value of @ 1.8 ohms. That length is far longer than needed to run from the firewall bulkhead connector to the coil positive terminal, so what IH did was just fold the excess length to and fro and tape it all up in a not so elegant folded mess and then wrapped it in electrical tape. What often happens down through the years is that extra long odd ball wire length gets "optimized" by well meaning, but ignorant former owners, or it gets replaced altogether with a length of standard automotve wire, which isn't suitable for the purpose. So a good place to beign is with the small gauge wires that are connected to your coil POS and NEG terminals. How many are there? What do they look like? Where do they go? and What condition are they and their terminals in? Good pictures are always helpful.
