Coil replacement

[Carrot]

I have this coil type. And after replacing spark plugs, points and condenser and also setting the right gap. The motor turns just fine when I hot wire from the battery positive to the positive on the coil but when I plug everything in to the true form. Motor won’t start up. I’m leaning towards the coil since it’s the last part. Just don’t know which one to get ? 

[Carrot]

Forgot to mention, there’s only two wire connectors on that coil. I don’t know if I’m missing more but. There’s a two wire connector on the positive( I assume power) and a ground wire on the other end (ground) to the condenser. 

[Carrot]