GM Coil and Module Help Required

It looks like you have the coil [-] wire passing over the pick up wires [ terminals G & W ].
There is a 2-300 v pulse on the coil [-] when the ign fires & can induce voltage into the p/up wires & cause false or no triggering. The high tension lead also looks close to the p/up wires.

Keep the coil wire & & HT leads away from p/up wires. It is a good idea to use co-axial microphone cable for the p/u wires & ground the outer braiding.