I am trying to start a 73 GTV...This is the coil setup that was in the car.
Yes, that's the stock set-up: a Marelli coil + an external resistor.
Looking at your picture of the old coil, two things have me puzzled:
- There is a pink or brown wire attached to the same coil terminal as the red lead from the resistor. Where does that pink or brown wire go?
- What is that white, cylinder-shaped thing to the right of the coil in the photo? Is that where the pink or brown wire goes?
I hooked up a used blue Bosch coil with only the 2 wires (one from wire loom on the firewall and one going to the distributor but nothing yet. Do I need the wiring shown on the old setup?
No, you don't need the wiring shown on the old setup - a Bosch blue coil doesn't need a resistor. You have it wired correctly.
Cleaned the points but no spark yet.
Do you have +12V at the coil "+" terminal? If so, it should produce spark.
Also, I have this wire connection just sitting there. Comes from the starter.
That is another part of the stock wiring. One end attaches to the starter solenoid, the connector with two wires went to the cold start solenoid on the Spica pump, and the third terminal went to the "+" terminal on the Marelli coil. Since your Bosch blue coil doesn't use a resistor, the connection to the coil "+" is no longer needed - just insulate that connector and secure it somewhere so it can't short out.