No Spark from coil, very confused!

[Twilightoptics]

When I bought my '67 she didn't run. Didn't have spark from the coil. Replaced coil. Still no spark. It did have power to it. Replaced the condensor in the distributor. Then I had spark. Truck ran. Then driving the other day the truck died. I tried to get it started again and the coil literally blew up.

Napa replaced coil for free, and I got a new condensor too, just to be safe. Now, no spark again. Doesn't have a balast resistor either. Bought one. Not sure where to put it on. I have two (that look like original wires) going to the + side of the coil. One yellow, and one tan/brown with very small black hashes like a candy cane almost. Should I only have one wire going to the + of the coil?

In the wire harness that these two coil wires come from, there is a blue, and a green wire that have plugs at the end of them that don't go to anything, what are they for?

I have power to the coil, from the coil to the points. So why don't I have spark from the coil? Coil's good, I would imagine, would be huge dumb luck that a brand new one is bad, but that doesn't explain why replacing the condensor made the truck run before and then the coil blow up.

So confused?!